Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Binomial Theorem question

2025 · 22 Jan · Shift 2 · Q48
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Binomial Theorem
  5. /2025 · 22 Jan · Shift 2 · Q48

Binomial Theorem question

2025 · 22 Jan · Shift 2 · Q48

JEE MainMathematicsBinomial TheoremNumerical+4 / −1
If ∑r=130r2(30Cr)230Cr−1=α×229\sum_{r=1}^{30} \frac{r^2\left({ }^{30} C_r\right)^2}{{ }^{30} C_{r-1}}=\alpha \times 2^{29}∑r=130​30Cr−1​r2(30Cr​)2​=α×229, then α\alphaα is equal to ‾\underline{\hspace{2cm}}​.
Numerical answer
PreviousNext

More from Binomial Theorem

  • The sum of all rational terms in the expansion of (1+21/3+31/2)6 is equal to ​.2025 · Numerical
  • If in the expansion of (1+x)p(1−x)q, the coefficients of x and x2 are 1 and -2 , respectively, then p2+q2 is equal to :2025 · MCQ
  • For some neq10, let the coefficients of the 5 th, 6 th and 7 th terms in the binomial expansion of (1+x)n+4 be in A.P. Then the largest coefficient in the expansion of (1+x)n+4 is:2025 · MCQ
  • Suppose A and B are the coefficients of 30th  and 12th  terms respectively in the binomial expansion of (1+x)2n−1. If 2 A=5 B, then n is equal to:2025 · MCQ
  • If α=1+r=1∑6​(−3)r−112C2r−1​, then the distance of the point (12,3​) from the line αx−3​y+1=0 is ​.2025 · Numerical
  • Let the coefficients of three consecutive terms Tr​, Tr+1​ and Tr+2​ in the binomial expansion of (a+b)12 be in a G.P. and let p be the number of all possible values of r. Let q be the sum of all rational terms in…2025 · MCQ
  • The least value of n for which the number of integral terms in the Binomial expansion of (37​+1211​)n is 183, is :2025 · MCQ
  • The remainder, when 7103 is divided by 23, is equal to:2025 · MCQ