Sequences and Series
The time taken by Rohan in five different races to run a distance of 500 m was 3.20 minutes, 3.37 minutes, 3.29 minutes, 3.17 minutes and 3.32 minutes. Find the average time taken by him in the races.
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Find the GM between the numbers a3b and ab3.
ABCD is a square of length a,a∈N,a>1. Let L1,L2,L3......, be point on BC such that BL1=L1L2=L2L3=.....=1 and M1,M2,M3......... be points on CD such that CM1=M1M2=...........=1. Then n=1∑a−1(AL22+LnMn2) is equal to
If the mean of 5 observations x,x+2,x+4,x+6 and x+8 is 11, find the value of x.
Insert 20 AM between 2 and 86.Then find first mean.
For any two positive numbers,we have
(x−4) is geometric mean of (x−5) and (x−2) find x.
Divided by 2.
Multiplied by 3