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Assumed Mean Method Class 11th

The mean of 10 numbers 7 * 8, 10 * 10, 13 * 12, 16 * 16, …. is__________.
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R
Raj Pandey

Contributor-Level 9

t r = ( 3 r + 4 ) ( 2 r + 6 ) = 6 r 2 + 2 6 r + 2 4

∴ ∑ r = 1 1 0 t r = 6 * 1 0 * 1 1 * 2 1 6 + 2 6 * 1 0 * 1 1 2 + 2 4 * 1 0 = 1 0 * 3 9 8

M e a n = 1 0 * 3 9 8 1 0 = 3 9 8

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