solve this Question with trick or easiest way for 50 points .
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4
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Brother this question is in hindi,,,,,if u don't mind then can u upload its English version
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1
Answer:
work on Gap
21 22 = Gap 1
60 64 = Gap 4
make gap equal :-
4[21 22 = Gap 1]
84 88 = Gap 4
Now,
84-60 = 3x
24 = 3x
x= 8
so,
Mean Proportion = √9*64 = 3*8 = 24 (Ans.)
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