moein dl7

.log_x⁡x=1 E.log⁡(x/y)= log⁡x-log⁡y
5. Which of the following is (are) true?
1.log⁡M/log⁡N =log⁡M-log⁡N 2.log⁡∛M=3 log⁡M 3.log_√a⁡M =2log_a⁡M
A. 1 only B. 2 only C. 3 only D. 1 and only E. None of them
6.Which of the following is (are) true?
1. log_4⁡x=2log_16⁡x 2. log_b⁡x=3 log_(b^3 )⁡x 3. log_4⁡16= log_16⁡4
A. 1only B. 2 only C. 3 only D. 1 and 2 only E. 1 and 3 only
7. 〖10〗^(1+log_10⁡3 )=……..
A.3 B.30 C. 3/10 D.10/3 E.15
8.(4)^log_2⁡3 =……..
sector of a circle has arc length of 8 cm and the area of 16 cm2,then the radius of the circle
in cm , is
A. 2 B. 3 C.5 D. 48 E. 12
5. OAB is a sector of a circle with centre O, radius 8 cm and a perimeter 22 cm. Then the area
of sector, in square cm is
A. 6 B. 28 C. 24 D. 48 E. 12
6. The area , in cm2 , of a circle has the same numerical value as the circumference, in cm, of
the same circle. The radius , in cm, is
A. 2 B. 1 C.2/π D.1/π E.1/2
7. An arc PQ subtends an angle of 120° at the centre of a circle of radius 1 cm. The length of
arc PQ is