Dr. Lal and Jain Solutions for Exercise 1: 2016

Rearrange the jumbled letters to make a meaningful word and then select the one which is different:

1. DNHA
2. EDAH
3. THEA
4. IRHA

Look carefully at the sequence to find the pattern.

Which of the following will replace (?) in the sequence?

If the area of a circle is $9\pi$ sq.cm, then its circumference is:

1. $9$ cm
2. $6\pi$ cm
3. $3\pi$ cm
4. $6$ cm

Direction: In each of the questions given below, there are two statements marked as Assertion (A) and Reason (R). Read the statements and mark the correct option.

Assertion (A): Forest cover in the country has gradually decreased.

Reason (R): Encroachment by humans is one of the concerns for the forest department.

'Maharatna' refers to a group of:

Which one of the following does not belong to the group?

1. Monitor
2. Keyboard
3. Webcam
4. Mouse

Find the G.C.F and L.C.M of $20$and $28$.

1. $20, 280$
2. $5, 280$
3. $10, 140$
4. $4, 140$

On a certain principal, simple interest amounts to Rs. 1000 in 1 year at the rate of 10% p.a. What will be the effective rate of interest if the same is compounded on a half-yearly basis?

1. 10.10
2. 10.15
3. 10.20
4. 10.25