Find the next number in the series below

21 32 54 87 131 ?

In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What is the Surname of Barbie Doll?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

During an interview, the interviewer ordered hot coffee for the candidate to relieve the stress. The coffee was kept before him. After a minute, the interviewer asked him, 'What is before you?' He replied 'Tea'.

The candidate was selected immediately. Why?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What number should come in place of the question mark below?