Question
The average height of each student in a class of 25
students is 150 cm. If 10 new students joined the class, then the average height of the each student in the class increases by 3 cm. Find the average height of 10 new students who joined the class.Solution
Total height of 25 students of the class = 150 × 25 = 3750 cm When 10 new students joined the class, average height of each student = 150 + 3 = 153 cm Total height of 35 students of the class = 153 × 35 = 5355 cm Average height of 10 new students who joined the class = {(5355 – 3750)/10} = 1605/10 = 160.5 cm
3. 8, 15, 24, 34, 48, 63
Select the wrong term in the series.
44, 47, 41, 50, 38, 53, 40
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
A series is given with one wrong term. Select the wrong number from the given series.
17, 29, 43, 59, 77, 97, 112
8, 20, 48, 108, 232, 482
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
Find the wrong number.
17, 25, 37, 47, 65, 81
Arrange the following words in a logical and meaningful order.
1. Monkey
2. Elephant
3. Rat
4. Fly
5. Lion
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
