| 2024-06-28 | Let tr=2r/2+2-r/2. Then ∑r=110tr2 is equal to.... |
| 2024-06-28 | If 12+22+32+…+20032=(2003) (4007) (334) and (1) (2003) + (2) (2002) + (3) (200.... |
| 2024-06-28 | The sum of the series x1-x2+x21-x4+x41-x8+⋯,to infinite terms, if |x|<1, is.... |
| 2024-06-28 | If ∑r=1nr4=I(n) then ∑r=1n(2r-1)4 is equal to.... |
| 2024-06-28 | If x1,x2,…,x20 are in H.P. and x,2,x20 are in G.P.. then ∑r=119xrxr+1=.... |
| 2024-06-28 | Greatest integer by which 1+∑r=130r×r ! is.... |
| 2024-06-28 | If the ratio of A.M. between two positive real numbers a andb to their H.M. is m : n, then a : b.... |
| 2024-06-28 | In the given square, a diagonal is drawn and parallel line segments joining points on the adjace.... |
| 2024-06-28 | If A1,A2;G1,G2 and H1,H2 be two A.M.'s, G.M.'s and H.M.'s between two quantities, then the value.... |
| 2024-06-28 | If [an] is an arithmetic sequence, then Δ=amanapmnp111 equal.... |
| 2024-06-28 | If the sum of first p terms, first q terms and first rterms of an A.P. be x, y and z respectivel.... |
| 2024-06-28 | 12+22+…+n2=1015, then value of n is .... |
| 2024-06-28 | The sum of the first n-terms of the series 12+2.22+32+ 2.42+52+2.62+… is n(n+1)22, when n.... |
| 2024-06-28 | If 112+122+132+… upto ∞=π26, then 112+132+152 +……=.... |
| 2024-06-28 | The sum∑r=2∞1r2-1 is equal to .... |
| 2024-06-28 | If A, G & H are respectively the A.M., G.M. & H.M. of threepositive numbers a, b, & .... |
| 2024-06-28 | If ax=by=cz=dt and a, b, c, d are in G.P., then x, y, z, t are in.... |
| 2024-06-28 | If a, b, c are in A.P. p, q, r are in H.P. and ap, bq, cr are in G.P., then pr+rp is equal to.... |
| 2024-06-28 | If x=∑n=0∞an,y=∑n=0∞bn,z=∑n=0∞cn where a, b, c are in AP and |a|&l.... |
| 2024-06-28 | If the sum of the roots of the quadratic equation, ax2+bx+c=0 is equal to sum of the squares of .... |
| 2024-06-28 | If 3+14(3+d)+142(3+2d)+….+ upto ∞=8, then the value of d is.... |
0