Sequences and Series
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Find x, if 2,x,21 are in G.P.
Find the geometric mean of the following pairs of numbers :2 and 8.
If three positive numbers a,b and c are in A.P. such that abc=8, then the minimum possible value of b is
In any ΔABC, Π(sinAsin2A+sinA+1) is always greater than
The sum of three A.M. between 2,10 is :
Find the arithmetic mean If 69.5 is the mean of 72,70,x,62,50,71,90,64,58 and 82. Find the value of x.
If the mean of 20,14,16,19,p and 21 is 27 then find the value of ′p′
After inserting n A.M.'s between 2 and 38, the sum of the resulting progressions is 200. The value of n is?