If M is the father of N and N is the son of O, what is the relationship of O to M?

B. WIFE

What is the sum of the first 10 prime numbers?

C. 129
Posted in:  Numbers -  Arithmetic -  Mathematics

In a mixed letter code, 'TABLE' is coded as '12345', 'CHAIR' is coded as '67890', and 'DESK' is coded as '5432'. What is the code for 'CHAIR'?

A. 67890

What is the antonym of 'happy'?

B. SAD
Posted in:  Antonyms -  Vocabulary -  English

If '?' represents multiplication, '?' represents division, '?' represents addition, and '?' represents subtraction, what is the value of 10 ? 2 ? 5 ? 5?

A. 20