Questions
Sum of 10 AMs between 20 and 30
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a
240
b
250
c
260
d
280
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Correct option is B
n2a+b=10220+30=5×50=250Similar Questions
Between 1 and 31 are inserted M arithmetic means so that the ratio of the 7th and (M - 1) th means is 5:9, then the value of m is
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