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Question

The value of 2m+1×32mn×5m+n×6n6m×10n+2×15m is equal to

A
50
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B
125
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C
150
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D
15
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Solution

The correct option is D 150
Now 2m+1×32mn×5m+n×6n6m×10n+2×15m

=2m×21×32m3n×5m×5n×(2×3)n(2×3)m×(2×5)n+2×(3×5)m

=2m×21×32m×5m×5n×(2×3)n3n×(2×3)m×(2×5)n+2×(3×5)m

=2m×21×32m×5m×5n×2n×3n3n×2m×3m×2n+2×5n+2×3m×5m

=2×32m×5n(n+2)×2n(n+2)3m+m

=2×32m×52×2232m

=2×52×22

=2×(5×2)2

=225×4

=150

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