| 2024-06-28 | Let xn,yn,zn,wn denotes nth terms of four different arithmetic progressions with positive terms..... |
| 2024-06-28 | Let r1,r2,r3,r4 be the roots of the equation, x4-9x3+ax2+bx+16=0 where a,b are constants. Then t.... |
| 2024-06-28 | If a,b,c,d∈R+and a,b,c,d are in H.P., then .... |
| 2024-06-28 | If a1a2a3…an are in H. P. then a1a2+a2a3+a3a4+…+ an-1an is equal to.... |
| 2024-06-28 | If the series limit of wavelength of the Lyman series for the hydrogen atoms is 912Å, then the s.... |
| 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 | 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.... |
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