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`CBSE`

Mathematical Reasoning

1.

The negation of is equivalent to

2.

The negation of is equivalent to

3.

If $\mathrm{p}\Rightarrow \left(~\mathrm{p}\vee \mathrm{q}\right)$ is false, the truth value of p and q are respectively

4.

Let p and q be two statements. Then, p v q is false, if

5.

The distance between two cities is 30 Km. A man goes at a speed of 30 Km per hour and returns at 20 Km per hour. What is his average speed

6.

If the sum of three consecutive numbers is 15, what is the square of the middle number?

7.

The age of the father 4 years ago was 8 times the age of his son. At present, the

father's age is 4 times that of his son. Find the present age of the son.

8.

The remainder left out when 8^{2n} –(62)^{2n+1} is divided by 9 is

9.

A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He Takes rest for 30 min after every hour. How many trees does he plant in 10 hours.

10.

The sum of ages of 4 children born at intervals of 4 years each is 60. What is the age of the youngest child?