Common Difference

Q. 11. If a+b=10 and ab=16, find the value of asquare+ab+bsquare

Q. Find the value of m in the equation $9+m=6m+8-m$
(2 marks)

Q. $ABCDE$ is a regular pentagon. A star of five points $ACEBDA$ is formed to join their alternate vertices. The sum of all five vertex angles of this star is

1. Two right angle
2. Four right angle
3. Three right angle
4. Five right angle

Q. The following information pertains to X Ltd.:
I. Equity share capital called up Rs 10, 00, 000
II. Calls in arrear Rs 80, 000
Ill. Calls in advance Rs 50, 000
IV. Proposed dividend 15%
The amount of dividend payable is:

1. Rs 1, 50, 000
2. Rs 1, 57, 500
3. Rs 1, 45, 500
4. Rs 1, 38, 000

Q. If the product of two numbers is -14/27. If one of the number be 7/9, find other

Q. In the given fig. $\angle PQR=\angle \mathrm{PRQ}$ , then "$\angle PQS=\angle \mathrm{PRT}$ " is true / false ?

1. True
2. False

Q. How many isosceles triangles are there with ${40}^o$ as one of the three angles?

1. $0$
2. $1$
3. $2$
4. $3$

Q. is an arithmetic sequence.

1. $0,1,4,13,...$
2. $5,12,19,26,..$
3. $4,9,12,19,...$