51.

A clock gains 15 minutes per day. If it is set right at 12 noon, the time it shows at 4 AM is

• 4.20 AM

• 4.30 AM

• 4.02 AM

• 4.02 AM

A home theatre set is ₹ 4,950/-. If two successive discounts of 20% and 15% are given, then its selling price is

• ₹3,336 /-

• ₹6,633/-

• ₹3,636/-

• ₹3,636/-

If 15% of x is three times of 10% of y, then x : y = ?

• 1 : 2

• 2 : 1

• 3 : 2

• 3 : 2

A bookseller bought 500 text books for ₹ 20,000. He wanted to sell them at a profit so that he get 50 books free. At what profit percent should he sell them?

• 10%

• 20%

• 15%

• 15%

20% of a man's salary is paid as rent, 60% are his living expenses and 10% are his savings. If he spends remaining ₹ 30 on the education of his children, find his salary

• ₹ 300/-

• ₹ 900/-

• ₹ 3,000/-

• ₹ 3,000/-

A gun is fired at a distance of 6.64 km away from Ram, He hears the sound 20 seconds later. Then the speed of sound is

• 664 m/sec

• 664 km/sec

• 332 m/sec

• 332 m/sec

The simple interest on ₹2,000/- for 2 years at ₹75 per thousand per annum will be

• ₹150/-

• ₹300/-

• ₹600/-

• ₹600/-

If  then the value of  is:

If  then the value of  is:

• 1

• 0

• -1

• -1

If  is an equilateral triangle of side 16 cm, then the length of altitude is