a, b, b, c, c, c, d, d, d, d, . . . . . . Find the 288th letter of this series.
Observe that each letter appeared once, twice, thrice .... They form an arithmetic progression. 1+2+3......
We know that sum of first n natural numbers = n(n+1)2n(n+1)2
So n(n+1)2n(n+1)2 ≤≤ 288
For n = 23, we get 276. So for n = 24, the given series crosses 288.
Ans is X.
|
If ABC =C3C3 and CAB = D3D3, Then find D3÷B3D3÷B3 |
Answer |
|
There are three trucks A, B, C. A loads 10 kg/min. B loads 13 1/3 kg/min. C unloads 5 kg/min. If three simultaneously works then what is the time taken to load 2.4 tones? |
Answer |
|
If A = $x^3y^2x^3y^2$ and B=$xy^3xy^3$, then find the HCF of A, B |
Answer |
|
HERE = COMES - SHE, (Assume s = 8)Find value of R + H + O |
Answer |
|
A person is 80 years old in 490 and only 70 years old in 500 in which year is he born?Sol: |
Answer |
|
Lucia is a wonderful grandmother and her age is between 50 and 70. Each of her sons have as many sons as they have brothers. Their combined ages give Lucias present age.what is the age? |
Answer |
|
A family X went for a vacation. Unfortunately it rained for 13 days when they were there. But whenever it rained in the mornings, they had clear afternoons and vice versa. In all they enjoyed 11 mornings and 12 afternoons. How many days did they stay there totally? |
Answer |
|
Find the unit digit of product of the prime number up to 50 . |
Answer |
|
HOW + MUCH = POWER Then P + O + W + E + R = |
Answer |
|
Complete the series..2 2 12 12 30 30 ? |
Answer |