What will be the number of permutations of n different things, taken r at a time, where repeatition is allowed?

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation:

76 *(5*8*4)*9*75

Given set:  [92, 88, 80]

The given equation has been solved on the basis of a certain rule. Find the correct answer for the unsolved equation on that basis:

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.

24 * 2 * 16 * 2 * 13 = 53

Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.

Which signs should be interchanged to make the given equation correct.

 51 ÷  3 + 17 x 14 - 2 = 6

Select the correct combination of mathematical signs that can sequentially replace the “@” sign and balance the following equation.

What will be the value of expression if the numbers (13) and (91) are interchanged?

48 - 35 + 13 ÷ 91 + 4 × 8