1. Find the cube root of 8000.Solution = prime factorisation of 8000 i

This question was asked in Ex 6.1, 2

1. Find the cube root of 8000.
Solution = prime factorisation of 8000 is 2x2x2x2x2x2x5x5x5x.
So, 3/8000=2x2x5=20
2. The cost of pair of roller snatches at a shop was ₹450.the sales tax charged was 5%find the bill amount.
Solution = on ₹100,the tex paid was ₹5/100x450
₹22.50
Bill amount =cost of item sales tax =₹450 ₹22.50= ₹472.50.