KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5

KSEEB Solutions for Class 8 Maths Chapter 10 Exponents Ex 10.5

Karnataka Board Class 8 Maths Chapter 10 Exponents Ex 10.5

Question 1.
Simply

Question 3.
Which is larger (100)⁴ or (125)³?
Answer:
(100)⁴ = [(10)²]⁴ = 10^2×4 =10⁸
= (2 x 5)⁸ = 2⁸ x 5⁸
(125)³ = (5³)³
= 5^3×3 = 5⁹
We know that 5 x 5⁸ = 5⁹
In the exponent 2⁸ x 5⁸, 2⁸ > 5
∴ 2⁸ x 5⁸ > 5 x 5^s
∴ (100)⁴ > (125)³