Question

Find the cube root of the (a)12167 (b)857375 by estimation method.

Answer 1

a)12167

Two groups 12 and 167

3 in unit place from 167

And 2 as in tens place

Because 2^3 <12<3^3

So required and is 23

B) 857375

5 from 375

And 9 from 857

So required ans is 95