Recently Active Disucss Test Question Questions

1.1+2.3+3.5+4.7+........ upto n terms is ...

A man tries to pay off Rs 900 in 40 monthly instalments which are in AP. When 30 are paid, he dies leaving a third of the total amount unpaid. Find the 2nd instalment ...

If the sum of the n terms of a series is an2+bn, which is true? ...

1/(b+c), 1/(c+a), 1/(a+b) are in AP. which is true ...

pth term of an AP is 1/q. qth term of an AP is 1/p. Sum of first pq terms is ...

Sum of 3 numbers in AP is 12. Sum of cubes of these is 408. The product is ? ...

3 numbers are in AP. Sum is 15. Sum of the squares of the extremes is 58. Find the series. ...

∫[x/√(a2-x2)]dx ...

∫sinxsin(2x)dx ...

∫[cot(lnx)/x]dx ...

∫sec2xtanx ...

∫e3xdx ...

∫tan(ax)dx ...

∫(lnx/x)dx ...

∫[1/(4x-3)]dx ...

∫(3x-5)ndx ...

Sum of p terms of an AP is 1/q. And of q terms is 1/p. find the sum of p+q terms. (p≠q) ...

Find the nth term of the series whose sum to n terms is given by 5n2+6n ...

Divide 20 into 4 parts that are in AP. Such that the product of 1st and 4th term is to the product of 2nd and 3rd term is 2:3 ...

For an AP, T1=10, d=-1/3. Find S31-S30 ...

sum of a few terms of the series 93+90+87+.... is 975. If the last term is -ve . find the last term. ...

Sum of first n terms of the series 25,22, 19,16,... is 116. Find n? ...

Tn = 2n+5 som of 1st n terms is given by ...

For an AP, Tn = n. Sum of the first n terms is given by ...

a, b, c, d.... are in AP. Given statements below: 1) a+x, b+x, c+x, d+x.... are in AP 2) ax, bx, cx, dx.... are in AP 3) a/x, b/x, c/x, d/x.... are in AP 4) a+ax, b+bx, c+cx, d+dx.... are in AP 5) ax3, bx3, cx3, dx3,..... are ...

If the pth term of an AP is q. qth term is p. What is p-qth term? ...

If Tn, Tn+2, Tn+7 are in AP (given that Tn is the nth term of an AP). Which is true? ...

Sn = n2+2n+1 Which of these is in AP? ...

7times the 7th term equals 11times the 11th term of an AP. Which term is zero? ...

Which of these is not an AP? ...