Question
How many times are the hands of a clock are at right
angle in a day?Solution
In 12 hours, they are at right angles 22 times. 
In 24 hours, they are at right angles 44 times.
A boat takes 17 hours to travel from P to Q upstream and from Q to P downstream. If the speed of the boat in still water is 8.5 km/h and the speed of th...
At a certain time in a park, the number of heads and the number of legs of monkeys and human visitors were counted, and it was found that there were 54 ...
The current age of Anupama is 25% greater than Chinky's age. Four years ago, the ages of Beena and Chinky were in the ratio of 4:...
How many three digit numbers are divisible by 5?
In an arithmetic progression (AP), the first term is 7, the common difference is 4, and the last term is 55. How many terms are there in the AP?
The average of 20 numbers is calculated as 35. However, it was later discovered that one of the numbers was mistakenly recorded as 28 instead of 82. Wha...
Find the third proportion of 16 and 24.
The ratio of selling price, cost price, and marked price of an article is 4:2:7, respectively. If there is a profit of Rs. 600 in the transaction, then ...
Amish invested 2500 Rupees in each of these schemes, offering simple interest of 12% per annum. 16% P.A. and 15% PA. respectively. Find the total intere...
In triangle ABC, G is the centroid. If CF, AD and 'BE' are medians on sides 'AB', 'BC' and 'CA' respectively, and area of triangle BGF is 24 cm2
