Explore topic-wise MCQs in Mental Ability.

This section includes 733 Mcqs, each offering curated multiple-choice questions to sharpen your Mental Ability knowledge and support exam preparation. Choose a topic below to get started.

651.

If 5 * 3 = 19 and 8 * 5 = 49, then what should 6 * 4 be?

A. 24
B. 28
C. 18
D. 16
Answer» C. 18
Discussion
652.

If 5@1=60; 12@8=200; 16@2=180; then what is the value of 16@10=?

A. 32
B. 11
C. 9
D. 260
Answer» E.
Discussion
653.

If 40@8 = 50, 30@3 = 100 and 10@2 = 50, then find the value of 20@5 = ?_x005F_x000D_

A. 70
B. 50
C. 40
D. 90
Answer» D. 90
Discussion
654.

If 40@8 = -5, 30@3 = -10 and 20@5 = -4, then find the value of 60@3 = ?

A. 45
B. -20
C. 25
D. -36
Answer» C. 25
Discussion
655.

If 4 x 5 x 2 = 524, 3 x 7 x 2 = 723 and 6 x 8 x 7 = 876 then 9 x 4 x 5 = ?

A. 495
B. 459
C. 549
D. 954
Answer» C. 549
Discussion
656.

If 4 * 7 * 2 = 361 and 5 * 9 * 1 = 480, then 2 * 1 * 3 = ?

A. 312
B. 324
C. 210
D. 102
Answer» E.
Discussion
657.

If 4Δ2 = 60, 7Δ9 = 160 and 8Δ3 = 110, then find the value of 3Δ2 = ?

A. 50
B. 90
C. 70
D. 60
Answer» B. 90
Discussion
658.

If 4!4 = 80, 3!8 = 110 and 6!2 = 80, then find the value of 7!9 = ?

A. 70
B. 100
C. 60
D. 160
Answer» E.
Discussion
659.

If 4!4 = 4, 14!2 = 8 and 10!18 = 14, then find the value of 2!6 = ?

A. 4
B. 8
C. 18
D. 12
Answer» B. 8
Discussion
660.

If 35 % 31 = 12, 92 % 30 = 14 then what is the value of 15 % 24 = ?

A. 12
B. 25
C. 33
D. 28
Answer» B. 25
Discussion
661.

If 4 * 2 = 3 and 8 * 4 = 3 , then 21 * 7 = ?

A. 4
B. 3
C. 8
D. 16
Answer» B. 3
Discussion
662.

If -3%1 = 3, 3%6 = -18 and -7%4 = 28, then find the value of -2%9 = ?

A. 47
B. -63
C. 18
D. -30
Answer» D. -30
Discussion
663.

If 3#5 = -20, 1#4 = -30 and 6#5 = 10, then find the value of 4#9 = ?

A. 70
B. -60
C. -50
D. -70
Answer» D. -70
Discussion
664.

If 3*1 = 20, 6*1 = 50 and 2*6 = -40, then find the value of 5*8 = ?

A. 100
B. 30
C. -50
D. -30
Answer» E.
Discussion
665.

If 30%6 = -5, 10%5 = -2 and 10%2 = -5, then find the value of 80%8 = ?

A. 40
B. 25
C. -10
D. 5
Answer» D. 5
Discussion
666.

If 3 # 6 * 9 = 45 and 9 # 8 * 7 = 105, then what is the value of 5 * 6 # 3 = ?

A. 14
B. 68
C. 86
D. 96
Answer» C. 86
Discussion
667.

If 30Ω6 = -5, 80Ω2 = -40 and 20Ω4 = -5, then find the value of 70Ω2 = ?

A. 10
B. -35
C. 15
D. -20
Answer» C. 15
Discussion
668.

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?_x005F_x000D_

A. 28
B. 12
C. 8
D. 32
Answer» D. 32
Discussion
669.

If 3 @ 3 * 3 = 3 and 48 @ 4 * 3 = 36, then 91 @ 13 * 2 = ?

A. 4
B. 8
C. 10
D. 14
Answer» E.
Discussion
670.

If 3 % 2 = 50, 2 % 4 = 60 then what is the value of 5 % 4 = ?

A. 16
B. 9
C. 90
D. 20
Answer» D. 20
Discussion
671.

If 29$14 = 6, 37$25 = 3 then what is the value of 84$62 = ?

A. 8
B. 13
C. 4
D. 15
Answer» D. 15
Discussion
672.

If 27 (15) 33 and 41 (13) 53, then what is the value of 'A' in 26 (A) 35?

A. 16
B. 13
C. 14
D. 11
Answer» B. 13
Discussion
673.

If 26#14=80; 5#3=16; 6#5=22; then what is the value of 14#5=?

A. 17
B. 38
C. 4
D. 9
Answer» C. 4
Discussion
674.

If ! = ÷, # = +, ^ = x, then calculate the value of 32!4^7#5

A. 58
B. 61
C. 64
D. 55
Answer» C. 64
Discussion
675.

If 23$35 = 13, 3$5 = 8 then what is the value of 4$13 = ?

A. 8
B. 14
C. 6
D. 49
Answer» B. 14
Discussion
676.

If 23 x 16 = 184, 37 x 10 = 185, then 85 x 12 = ?

A. 511
B. 610
C. 510
D. 410
Answer» D. 410
Discussion
677.

If 23@5=56; 6@7=26; 5@2=14; then what is the value of 7@5=?

A. 26
B. 24
C. 19
D. 52
Answer» C. 19
Discussion
678.

If 2*10 = 6, 14*16 = 15 and 4*16 = 10, then find the value of 16*8 = ?

A. 12
B. 8
C. 10
D. 18
Answer» B. 8
Discussion
679.

If 2%1 = 30, 6%2 = 80 and 2%5 = 70, then find the value of 4%1 = ?_x005F_x000D_

A. 100
B. 50
C. 80
D. 30
Answer» C. 80
Discussion
680.

If 20#4 = -5, 50#25 = -2 and 80#16 = -5, then find the value of 10#2 = ?_x005F_x000D_

A. -30
B. -40
C. -20
D. -5
Answer» E.
Discussion
681.

If 20Δ30 = 5, 90Δ40 = 13 and 20Δ20 = 4, then find the value of 90Δ80 = ?_x005F_x000D_

A. 14
B. 20
C. 16
D. 17
Answer» E.
Discussion
682.

If 20&60 = 8, 40&80 = 12 and 10&20 = 3, then find the value of 20&50 = ?_x005F_x000D_

A. 18
B. 7
C. 10
D. 17
Answer» C. 10
Discussion
683.

If 20 - 10 means 200, 8 / 4 means 12, 6x2 means 4, then_x005F_x000D_  _x005F_x000D_ 100 - 10 x 1000/ 1000 + 100 x 10 = ?_x005F_x000D_

A. 20
B. 10
C. 0
D. 1
Answer» D. 1
Discussion
684.

If -2@-4 = -8, -1@-8 = -8 and -1@6 = 6, then find the value of -1@7 = ?

A. 95
B. -88
C. 82
D. 7
Answer» E.
Discussion
685.

If 19#13=3; 25#3=11; 36#10=13; then what is the value of 7#3=?

A. 21
B. 2
C. 26
D. 39
Answer» C. 26
Discussion
686.

If 19 $ 7 = 312 and 23 $ 9 = 448, then 31 $ 11 = ?

A. 231
B. 441
C. 641
D. 840
Answer» E.
Discussion
687.

If 19!3 = 32, 13!4 = 18 and 12!2 = 20, then find the value of 17!3 = ?_x005F_x000D_

A. 16
B. 28
C. 4
D. 8
Answer» C. 4
Discussion
688.

If 19 + 2 x 2 + 3 = 369 and 23 + 2 x 6 + 2 = 565, then 7 + 3 x 11 + 3 = ?

A. 1674
B. 1382
C. 1268
D. 1496
Answer» B. 1382
Discussion
689.

If 18$6 = 6, 8$2 = 3 and 8$4 = 2, then find the value of 18$12 = ?_x005F_x000D_

A. 3
B. -8
C. 4
D. 6
Answer» B. -8
Discussion
690.

If 18$2 = 10, 8$4 = 6 and 12$18 = 15, then find the value of 7$9 = ?_x005F_x000D_

A. 12_x005F_x000D_
B. 20
C. 8
D. 18
Answer» D. 18
Discussion
691.

If 18α12 = 3, 2α14 = -6 and 4α4 = 0, then find the value of 2α16 = ?

A. -7
B. 8
C. 10
D. -1
Answer» B. 8
Discussion
692.

If 18 x 12 = 206 and 19 x 22 = 408, then 23 x 36 = ?

A. 878
B. 818
C. 794
D. 776
Answer» C. 794
Discussion
693.

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?_x005F_x000D_

A. 2_x005F_x000D_
B. -1_x005F_x000D_
C. -8_x005F_x000D_
D. 9
Answer» C. -8_x005F_x000D_
Discussion
694.

If 18α1 = 34, 19α2 = 34 and 18α3 = 30, then find the value of 18α8 = ?

A. 6
B. 16
C. 20
D. 8
Answer» D. 8
Discussion
695.

If 17@1=8; 9@1=4; 6@4=1; then what is the value of 8@2=?

A. 3
B. 26
C. 23
D. 47
Answer» B. 26
Discussion
696.

If 16#2 = 16, 12#6 = 36 and 6#1 = 3, then find the value of 4#4 = ?_x005F_x000D_

A. 2
B. 4
C. 10
D. 8
Answer» E.
Discussion
697.

If 15#2 = 26, 11#3 = 16 and 10#9 = 2, then find the value of 11#4 = ?

A. 4
B. 6
C. 14
D. 16
Answer» D. 16
Discussion
698.

If 15@7=44; 5@4=18; 6@17=46; then what is the value of 17@4=?

A. 36
B. 42
C. 40
D. 49
Answer» C. 40
Discussion
699.

If 16α1 = 8, 14α6 = 42 and 12α5 = 30, then find the value of 2α6 = ?

A. 6
B. 18
C. 4
D. 10
Answer» B. 18
Discussion
700.

If 14 % 32 = 46, 52 % 20 = 72 then what is the value of 35 % 14 = ?

A. 39
B. 29
C. 19
D. 49
Answer» E.
Discussion