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A student is allowed to select at most n-blocks from a collection of (2n + 1) books. If the total number of ways in which he can select a book is 63, find the value of n.Solution) Σ2n+1Cr,(from r=1 to r=n)=(22n+1/2)-1=22n-1=63,n=3.
r=asin3x
limit x-a/|x-a| equals x-a [a]a [b]0 [c]-a [d]none 0f these
Basic indefinite integrals The first integral which we'll look at is the integral of a power of x. ∫x n dx = (x n +1 / n + 1)+ c, n
1/sec A+tan A =1-sin A /cos A
what is share and dividend?
hi how are you
julie has 3 hats and 5 scarves. How many ways can she wear a hat and a scarf?
8l550ml - 1/4l =
A box contains 12 balls out of which x are black .if one ball is drawn at random from the box what is the probability that it will be a black ball ? If 6 more black balls are pu
bunty and bubly go for jogging every morning. bunty goes around a square park of side 80m and bubly goes around a rectangular park with length 90m and breadth 60m.if they both take
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