Explore topic-wise MCQs in Digital Circuits.

This section includes 2251 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.

151.

Rabi had Rs. 713.39 in his bank account. He deposited Rs. 450.75 in his bank account and withdrew the money to pay for five shirts. If the remaining balance of his account is Rs. 545.19, then what is the price of each shirt?

A. Rs. 125.50
B. Rs. 113.75
C. Rs. 123.79
D. Rs. 120.79
Answer» D. Rs. 120.79
152.

Find the smallest three–digit number that is exactly divisible by 12, 15 and 24.

A. 360
B. 120
C. 180
D. 240
Answer» C. 180
153.

A number is doubled and 9 is added. If the resultant is tripled, it becomes 75. What is that number?

A. 12
B. 3.5
C. 6
D. 8
Answer» E.
154.

A treasure chest has less than 100 gold coins. The number of coin isi) One more than a multiple of 3ii) Two more than a multiple of 4iii) Three more than a multiple of 5 andiv) Four more than a multiple of 6How many coins are there in the chest?

A. 58
B. 88
C. 98
D. 38
Answer» B. 88
155.

Find the range of the data : 11, 13, 9, 17, 13, 19, 10, 11.A. 9B. 10C. 11D. 13

A. C
B. D
C. A
D. B
Answer» E.
156.

If (3x+3) + 7 = 250 ; then x is equal to

A. 5
B. 2
C. 3
D. 1
Answer» C. 3
157.

If the number 4x315 is divisible by 3, where x is a digit, what can be the sum of all such values of x?

A. 16
B. 14
C. 15
D. 11
Answer» D. 11
158.

If 8543P is completely divisible by 8, then what will be the digit in place of P?

A. 2
B. 4
C. 8
D. 6
Answer» B. 4
159.

Find the percentage of population whose birthday falls on the last day of February in a leap year, assuming the number of births each day is the same.

A. 0.2732%
B. 2.74%
C. 0.024%
D. 0.0684 %
Answer» B. 2.74%
160.

If 1433 × 1423 × 1425 is divided by 12, then what will be the remainder?

A. 3
B. 2
C. 1
D. 0
Answer» B. 2
161.

How many of the factors of 360 are perfect squares?

A. 4
B. 3
C. 6
D. 5
Answer» B. 3
162.

If an eleven-digit number 5y5888406x6 is divisible by 72, then what is the value of (9x – 2y), for the least value of x?

A. 7
B. 5
C. 3
D. 4
Answer» D. 4
163.

Consider the equation (43)x = (y3)8 where x and y are unknown. The number of possible solution is

A. 4
B. 5
C. 6
D. 7
Answer» C. 6
164.

Find the product of the sum of digits of the smallest 4 - digit number divisible by 6 and the sum of digits of the smallest 5 - digit number divisible by 11.

A. 4
B. 5
C. 6
D. 7
Answer» D. 7
165.

How many integers are there between 63 and 345 which are exactly divisible by 8?

A. 32
B. 33
C. 34
D. 36
Answer» E.
166.

If the points P and Q represents real number \(0.7\bar 3\) and \(0.5\bar 6\) on the number line, then what is the distance between P and Q?

A. \(\frac{1}{6}\)
B. \(\frac{1}{5}\)
C. \(\frac{16}{45}\)
D. \(\frac{11}{90}\)
Answer» B. \(\frac{1}{5}\)
167.

Let x be the greatest number which divides 955, 1027, 1075, the remainder in each case is the same. Which of the following is NOT a factor if x?

A. 6
B. 8
C. 4
D. 16
Answer» E.
168.

If (x + 4)3 + (2x + 1)3 + (2x + 5)3 = (3x + 12) (2x + 1) (2x + 5), then what is the value of x?

A. -3
B. -2
C. 2
D. 3
Answer» C. 2
169.

If an 11-digit number 765y88436x6 is divisible by 72, and x assumes the largest value, then what is the value of (x - y)?

A. 4
B. 5
C. 8
D. 6
Answer» D. 6
170.

If 2x2 + ax + 2b, when divided by x – 1, leaves a remainder of 16 and x2 + bx + 2a, when divided by x + 1, leaves a remainder of -1 then a + b equals:

A. 14
B. -8
C. -14
D. 8
Answer» E.
171.

Find the least number which, when divided by 12, 16 and 36, leaves remainder 5 in each case.

A. 149
B. 293
C. 144
D. 12
Answer» B. 293
172.

If two-third of three-fifth of a number is 42, then find one-third of that number.

A. 40
B. 45
C. 105
D. 35
Answer» E.
173.

Let p be a prime number. Then √p is:

A. a rational number
B. an integer
C. a prime number
D. not a rational number
Answer» E.
174.

A number is greater than 3 but less than 8. Also it is greater than 6 but less than 10. The number is

A. 5
B. 6
C. 7
D. 8
Answer» D. 8
175.

A Class has 100 students with roll number from 101 to 200. All the even numbered students study Physics, whose roll number are divisible by 5 study Chemistry & students with roll numbers divisible by 7 study Biology. How many students do not study any of the given subject Physics, Chemistry or Biology ?

A. 35
B. 45
C. 51
D. 62
Answer» B. 45
176.

A man invited some boys and girls on the birthday of his son. The number of boys was 2 less than the number of girls. He gave Rs. 10 to each boy and Rs. 20 to each girl. If the total amount distributed by him was Rs. 280, the number of boys was

A. 25
B. 10
C. 8
D. 15
Answer» D. 15
177.

A number is doubled and 9 is added. If the resultant is trebled it becomes 75. What is the number?

A. 12
B. 10
C. 8
D. 14
Answer» D. 14
178.

12 gallons equal

A. 54480 ml
B. 56680 ml
C. 58840 ml
D. None of the above
Answer» E.
179.

A monkey climbs 30 feet at the beginning of each hour and rests for a while when he slips back 20 feet before he again starts climbing in the beginning of the next hour. If he begins his ascent at 8.00 am at what time will he first touch a flag at 120 feet from the ground?

A. 4 pm
B. 5 pm
C. 6 pm
D. None of these
Answer» D. None of these
180.

Find the highest common factor of 4/5, 5/7, 4/7.

A. 1/35
B. 5/13
C. 2/31
D. 1/31
Answer» B. 5/13
181.

If a dozen apples weigh 1.8 kg in total, how many apples will be there in 3 boxes weighing 23.250 kg each?

A. 280
B. 155
C. 465
D. 215
Answer» D. 215
182.

Find the L.C.M of 1/2, 2/5, 4/7, and 6/17.

A. 24
B. 6
C. 12
D. 18
Answer» D. 18
183.

A number is written in the form of p/q where p and q have 1 as the only common factor with q > 0. This number is said to be the standard form of which of the following?I. Irrational numberII. Rational number

A. Both I and II
B. Neither I nor II
C. Only I
D. Only II
Answer» E.
184.

How many positive factors of 325 are there?

A. 6
B. 8
C. 12
D. 9
Answer» B. 8
185.

Find the greatest number which divides 19, 29 and 42 to leave remainders 3, 1 and 2 respectively.

A. 2
B. 4
C. 8
D. 5
Answer» C. 8
186.

Choose the correct factor of f(x) = 2x2 - 5x + 2 A. x - 2B. x - 3C. x - 4D. x - 5

A. B
B. A
C. D
D. C
Answer» C. D
187.

Consider the following statements:1. The classes of type 15-19, 20-24, 25-29 etc. are exclusive classes.2. The classes of type 15-20, 20-25, 25-30 etc. are inclusive classes.Which of the above statements is/are correct?

A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2
Answer» E.
188.

Let x be the least number of 4 digits that when divided by 2, 3, 4, 5, 6 and 7 leaves a remainder of 1 in each case. If x lies between 2000 and 2500, then what is the sum of the digits of x?

A. 15
B. 4
C. 9
D. 10
Answer» C. 9
189.

Digits 2, 3, 4, 6, 7, 8 are arranged in the following blanks: ____ ____ ____+ ____ ____ ____The largest possible number after the addition is

A. 1605
B. 1560
C. 1308
D. 808
Answer» B. 1560
190.

In an examination 35% students fail in Mathematics, 15% fail in English. If 10% fail in both, the pass per cent is

A. 60%
B. 40%
C. 35%
D. 25%
Answer» B. 40%
191.

Find the number which when multiplied by 15 is increased by 196

A. 10
B. 12
C. 14
D. 16
Answer» D. 16
192.

Find the Square root of the following:√225

A. 10
B. 9
C. 20
D. 15
Answer» E.
193.

If Rs. 2,80,000 is the 2/7 of cost of a house, then the value of the house is

A. Rs. 9,80,000
B. Rs. 8,00,000
C. Rs.10,00,000
D. Rs.12,00,000
Answer» B. Rs. 8,00,000
194.

LCM of 3/5, 7/10, 1/15, 9/25 is:

A. 63/5
B. 63/60
C. 1/5
D. 1/60
Answer» B. 63/60
195.

If a3 – b3 = 1603 and (a – b) = 7, then (a + b)2 – ab is equal to∶

A. 458
B. 338
C. 229
D. 648
Answer» D. 648
196.

In a division action, the divisor is 32 times the quotient and 12 times the remainder. If the remainder is 56, what will the dividend be?

A. 14,168
B. 13,496
C. 13,446
D. 14,112
Answer» B. 13,496
197.

In the decimal system of numbers, ______ is called the place holder.

A. 2
B. 3
C. 1
D. 0
Answer» E.
198.

If the total cost of 25 people going to Matheran was Rs. 7575, how much did each person spend?

A. 300
B. 303
C. 202
D. 330
Answer» C. 202
199.

If x = (√2 + 1)/(√2 – 1) and y = (√2 – 1)/(√2 + 1), then find the value of x2 + y2.

A. 34
B. 36
C. 32
D. 38
Answer» B. 36
200.

A number consists of two digits whose sum is 8. If 18 is subtracted from the number, then the digits are reversed. Find the number

A. 80
B. 53
C. 62
D. 71
Answer» C. 62