In the sequence of numbers

2/3, 4/7, X, 11/21, 16/31

The missing number X is:

A bag contains an equal number of one rupee, 50 paise and 25 paise coins. If the total amount in the bag is Rs. 35, how many coins of each type are there ?

The sum of a positive number and its reciprocal is twice the difference of the number and its reciprocal. The number is :

January 1, 1995 was Sunday. What day of the week lies on January 1, 1996?

The average of four consecutive even numbers is 27. The largest of these numbers is:

Monday falls on 20th March 1995. What was the day on 3rd November 1994?

Insert the missing number:

16/32, 15 /33, 17/31, 14/34, ?

The sides of a triangle are in the ratio of 1/2:1/3:1/4. If its perimeter is 52 cm, the length of the smallest side is :

Out of four numbers, the average of the first three numbers is thrice the fourth number. If the average of the four numbers is 5, the fourth number is:

How many Mondays are there in a particular month of a particular year, if the month ends on Wednesday?

January 12, 1980 was Saturday, what day was January 12, 1979:

If the radius of a circle is increased by 50 per cent. Its area is increased by:

Mary has three children. What is the probability that none of the three children is a boy?

At what time between 3 and 4 O’clock will the hands of a watch point in opposite directions?

Insert the missing number:

36/62, 39/63, 43/61, 48/64, ?

Probability sampling implies:

Which number is missing in the following series ?

2, 5, 10, 17, 26, 37, 50, ?

Find out the number which should come at the place of question mark which will complete the following series:

5, 4, 9, 17, 35, ?, 139

If an article is sold for Rs. 178 at a loss of 11%; what would be its selling price in order to earn a profit of 11% ?

Insert the missing number in the following series:

4 16 8 64 256