Calculate the net force on the body shown.
Which of the following is divisible by 25:
Coefficient of xn in (nC0+C1x+nC2x2......nCnxn)×(nC0+nC1×.....nCnxn) is
Let S1 = nC0 + nC1 + nC2.............nCn and S2 = nC0 - nC1 + nC2 ..............+ (−1)n nCn
Find the value of S1S1+S2
Find the value of S1S1+S2 is ___.