Quantitative Aptitude - Arithmetic Ability Questions

A solid copper sphere of radius 9 cm is melted and reformed into a wire of radius 1 mm. What will be the length of this wire? (Take π = 22/7)

What is the value of (4a2 - 9b2 )/(2a + 3b) is

(61 + 62 + 63 + ......... +110) = ?

If A is 6 times more than B, then by what percentage is B is less than A?

Kamal has some apples. He sold 40% more than he ate. If he sold 70 apples, how many did he eat?

Select the odd letters from the given alternatives.

The incomes of X and Y are in the ratio 5 : 6 and their expenditure are in the ratio 6 : 5. If X saves Rs 7000 and Y saves Rs 15000, then what will be the income (in Rs) of X?

There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?