if mean is 50 then find a of the following data
x 10 30 50 70 90
f 17 5a+3 32 7a-11 19
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hope it helps..!!
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sushant57:
but my answer is 10
howw
wht was ur fixi?? n fi??
apne calculation me mistake kii hai check please
7a-11×70
= 490a - 770
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