Qstnid -A-2- If 1125 = 3<sup>m</sup> &Times; 5<sup>n</sup>; Find M And N. - 02: Exponents (Powers) Class 8 Maths - Icse-viii-mathematics

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ICSE-VIII-Mathematics

02: Exponents (Powers) Class 8 Maths

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Qstn# A-2 Prvs-Qstn Next-Qstn

#2
If 1125 = 3^m × 5ⁿ; find m and n.
Ans : 1125 = 3² × 5³
The factors of 1125 are 3 × 3 × 5 × 5 × 5

∴ 1125 = 3 × 3 × 5 × 5 × 5
Now comparing, 3² × 5³ = 3^m × 5ⁿ
∴ m = 2 , n = 3