Question

1. For a fixed base, if the exponent decreases by 1, the number becomes (a) one-tenth of the previous number (b) ten times of the previous number (c) hundredth of the previous number (d) hundred times of the previous numbers.​

Answer 1

Correct option is A)

If the exponent is decreased by 1, then for the fixed base, the number becomes one-tenth of the previous number.

For 10

5

, exponent decreases by 1

⇒ 10

5−1

=10

4

⇒

10

5

10

4

=

10

1

please mark me as brainlist

Answer 2

${\sf{Answer}: (a) \:One-tenth\:of\:the\:previous\:number}$

${\sf{\star\:{If\: the \:exponent \:is \:decreased\: by \:one, the\: number\: becomes\: one-tenth \:of }$

${\sf{\:the\: previous \:number\: for\: the \:fixed\: base.}$

${\sf{\bullet}\:Suppose \:for \:10^8\: when\: the \:exponent \:is\: decreased\: by \:1, it \:becomes \:10^7.}$

${\sf{Hence, 10^7/10^8}$

${\sf{=\frac {1}{10}}$