Students can Download Maths Chapter 10 Exponents Ex 10.2 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 8 Maths helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.

## Karnataka Board Class 8 Maths Chapter 10 Exponents Ex 10.2

Question 1.

Simplify

i. 3^{1} × 3^{2} × 3^{3} × 3^{4} × 3^{s} × 3^{6
}ii. 2^{2} × 3^{3} × 2^{4} × 3^{5} × 3^{6}

Answer:

i. 3^{1+2+3+4+5+6}

_{=} 3^{21
}[a^{m} x a^{n} = a^{m+n}]

ii. 2^{2} × 3^{3} × 2^{4} × 3^{5} × 3^{6} [a^{m} x a^{n} = a^{m+n}]

= 2^{2+4} × 3^{3+5+6}

= 2^{6} × 3^{14}

Question 2.

How many zeros are there in 10^{4} x 10^{3} x 10^{2} x 10?

Answer:

10^{4} × 10^{3} × 10^{2} × 10

= 10^{4+3+2+1}

= 10^{10
}There are 10 zeros.

Question 3.

Which is larger (5^{3} x 5^{4} x 5^{s} x 5^{6}) or (5^{7} x 5^{8})

Answer:

5^{3} x 5^{4} x 5^{5} x 5^{6}

= 5^{3+4+5+6}

= 5^{18 }5^{7} x 5^{8}

= 5^{7+8}

= 5^{8
}∴ 5^{3} x 5^{4} x 5^{s} x 5^{6} is larger than 5^{7} x 5^{8}