Q6 of 49 Page 12

Evaluate [(5-1 × 3-1)-1 ÷ 6-1]

 For any number a ≠ 0

a-1 = 1/a

So,

[(5-1 × 3-1)-1 ÷ 6-1]

= [15 × 6]

= 90

More from this chapter

All 49 →
4

By what number should 5-1 be multiplied so that the product many be equal to (-7)-1?

 5

In a stack there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack.

 7

Evaluate

8

Find the value of x for which