Quantitative Aptitude - Arithmetic Ability Questions

If N = 0.369369369369... and M = 0.531531531531..., then what is the value of (1/N) + (1/M)?

The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead of 26. what is the correct average?

The average of 41 consecutive odd numbers is 49. What is the largest number.

A trader sold a cycle at a loss of 10%. If the selling price had been increased by Rs. 200, there would have been a gain of 6%. The cost price of the cycle is

5% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

If a = √2 + 1, b = √2 - 1 then the value of 1a+1+1b+1 ?

56/32 simplified value?

In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average is 42 marks?