The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?

In the middle of a round pool lies a beautiful water-lily. The water-lily doubles in size every day. After exactly 20 days the complete pool will be covered by the lily. After how many days will half of the pool be covered by the water-lily?

A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night it slides 4 meters back downwards. How many days does it take before the snail reaches the top of the pit?

Area of a largest circle in a square whith side 14m. is:

what is 30% of 1986 ?

50 times 5 paise for 50 days equals

40% of journey is covered in 20min. & 60% in 40 min. if total distance is 120km then find average speed

1% of 1354

2 trains coming from opposite direction are 55 km apart and they will collide after 15 mins.the speed of 1 train is 120 kmph what is the speed of other?

a 101 digit number has 50 2's in the begining and 50 3's at the end 222222....?.....33333 this nos is divisible by 7 find the 51st nos

square root of 3.6 is 0.6

a shopkeeper buys a dozen article and sell it for 80% profit but he gives 3 articles for free for every dozen item he sells whats his profit %?

if i travel half my distance at 40kmph and the other half at 60 kmph whats my average speed for the whole journey

in a series 1 is repeated once 2 is repeated twice 3 is repeated thrice and so on what would be the digit when sum of all digit reaches 300?

a series of 11 nos has a mean 48 and a median 50 what would be the maximum range between any 2 given nos?

The age of the father 3 years ago was 7 times the age of his son. At present the father's age is 5 times that of his son. What are the present ages of the father and the son?

The avg. age of 30 boys of a class is 14 years. When the age of the class teacher is included, the average becomes 15 years. Find the age of class teacher?

A cricketer has completed 10 innings and his average is 21.5 runs. How many runs he must make in his next inning so as to raise his avg. to 24?

A, B and C enter into a partnership. In advance, A gives Rs 1000 for 4 months. B gives Rs 1500 for 8 months and C gives Rs 2000 for 10 months. They gain Rs 585 altogether. Find the share of profit each?