Advertisements
Advertisements
प्रश्न
Simplify `sqrt(50)`
Advertisements
उत्तर
`sqrt(50) = sqrt(25) xx 2`
`= 5sqrt(2)`
APPEARS IN
संबंधित प्रश्न
In an AP given a3 = 15, S10 = 125, find d and a10.
Find the sum of first 22 terms of an AP in which d = 7 and 22nd term is 149.
Find the sum of the following arithmetic progressions:
`(x - y)^2, (x^2 + y^2), (x + y)^2` ...., to n terms
Find the sum of n terms of an A.P. whose nth terms is given by an = 5 − 6n.
Find the sum of the first 15 terms of each of the following sequences having the nth term as
bn = 5 + 2n
If the 10th term of an AP is 52 and 17th term is 20 more than its 13th term, find the AP.
Determine the nth term of the AP whose 7th term is –1 and 16th term is 17.
The first three terms of an AP are respectively (3y – 1), (3y + 5) and (5y + 1), find the value of y .
If the ratio of sum of the first m and n terms of an AP is m2 : n2, show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1) ?
The sequence −10, −6, −2, 2, ... is ______.
Write the common difference of an A.P. whose nth term is an = 3n + 7.
If the first, second and last term of an A.P. are a, b and 2a respectively, its sum is
If S1 is the sum of an arithmetic progression of 'n' odd number of terms and S2 the sum of the terms of the series in odd places, then \[\frac{S_1}{S_2} =\]
The sum of first 20 odd natural numbers is ______.
An article can be bought by paying Rs. 28,000 at once or by making 12 monthly installments. If the first installment paid is Rs. 3,000 and every other installment is Rs. 100 less than the previous one, find:
- amount of installments paid in the 9th month.
- total amount paid in the installment scheme.
Q.4
Find the sum of first 20 terms of an A.P. whose first term is 3 and the last term is 57.
How many terms of the A.P. 27, 24, 21, ..., should be taken so that their sum is zero?
How many terms of the A.P. 24, 21, 18, … must be taken so that the sum is 78? Explain the double answer.
In an A.P., if Sn = 3n2 + 5n and ak = 164, find the value of k.
