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41 Maths Exercise Solutions

If, then which of the following is not always true for an integer . （ ）

A. .

B. .

C. .

D. .

If , then the value of is（ ）

A.

B.

C.

D.

Fill in the blank:

Fifteen added to thrice a whole number gives . The number is ___.

Fifteen added to thrice a whole number gives . The number is ___.

Fill in blank.

If , then is___.

If , then is___.

State whether the given statement is True or False.

is the solution of the linear equation .___

is the solution of the linear equation .___

State whether the given statement is true or false.

Three consecutive even numbers whose sum is are and .___

Three consecutive even numbers whose sum is are and .___

The present age of father is four times the age of his son. After years, age of father will become three times the age of his son. Find their present ages.

A steamer goes downstream from one point to another in hours. It covers the same distance upstream in hours. If the speed of stream be km/hr, find the speed of the steamer in still water and the distance between the ports.

Distance between two stations and is . Two cars start simultaneously from and towards each other and the distance between them after hours is . If the speed of one car is less than the other by , find the speed of each car.

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