Which digits should come in place of * and $ if the number 62684*$ is divisible by both 8 and 5 ?

What value will replace the question mark in each of the following equations ? 

(i) ? – 1936248 = 1635773 

(ii) 8597 – ? = 7429 – 4358

Find the remainder when 2³¹ is divided by 5.

Simplify : 

(i) 5793405 x 9999 

(ii) 839478 x 625

How many numbers between 11 and 90 are divisible by 7 ?

Simplify : 896 x 896 – 204 x 204

Show that 4832718 is divisible by 11.

What least value must be assigned to * so that the number 197 * 5462 is r 9 ?