IF a catamaran travel at a speed of 20 km per hour in stillwater. So when it travel at a downstream speed 5 kilometre per hour. What will be the time taken by it to travel 90 km.

Since the catamaran is travelling in downstream the speed of the stream as a pin the speed of the ship so its speed is equals to catamaran speed+downstream speed. Which becomes 20+5=25 km/he. Now by applying a formula we get

Time=90/25. We get our answer which is 3.6

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Find out the missing number in the following sequence:

1, 3, 3, 6, 7, 9, ?, 12, 21.

1, 3, 3, 6, 7, 9, ?, 12, 21.

Clearly, the given sequence is a combination of two series:

I. 1, 3, 7, ?, 21 and II. 3, 6, 9, 12

The pattern followed in I is + 2, + 4, ...; and

the pattern followed in IIis + 3.

Thus, missing number = 7 + 6 = 13.

Hence, the answer is (D)..

Lakshmi and Meena's are Rohan wives. Shalini is meena's stepdaughter. How is Lakshmi related to Shalini?

Shalini is Meena's step daughter means Shalini is the daughter of the Other wife of Rohan.

So, Shalini is the daughter of Lakshmi or Lakshmi is the mother of Shalini.

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. In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options.

D-4, F-6, H-8, J-10, ?, ?

The letters in the series are alternate and the numbers indicate their position in the alphabets from the beginning.

In following alphabet series , one term missing as shown by question mark . Choose missing term from options.

DF, GJ, KM, NQ, RT, ?

There is a gap of one letter between both the letters of first term, a gap of two letters between both the letters of second term and again a gap of one and two letters between the letters of third and fourth terms respectively. Beside, the last letter of each term and the first letter of next term are in alphabetical order.

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Look at this series: 201, 202, 204, 207, . . .

What number should come next?

What number should come next?

In this addition series,

1 is added to the first number (201 + 1 = 202);

2 is added to the second number (202 + 2 = 204);

3 is added to the third number (204 + 3 = 207);

and 4 is added to the third number. (207 + 4 = 211)

So the answer is 211..

A+B means A is daughter of B

A*B means A i the son of B and

A-B means A is wife of B

If Z*T -S*U+P, what U to Z.

Z*T-S*U means Z is the son of T who is the wife of s who is the son of U i.e Z is the son of S who is the son of U i.e Z is the grandson of U or U is the grandmother or grandfather of z. form the choice( 2) is true..

Boys in a class sit in 5 rows such that there is 1 boy in 1st row and 1 boy increase in each row (2 in 2nd 3 in 3rd....). Now they are rearranged again in 5 rows, but equal no. of boys in each row, how many boys are in a row:

No explanation available for this question..