(24 * 5 * 7 * 9) / ? = 216
(24 * 5 * 7 * 9) / ? = 216
A. 15
B. 20
C. 25
D. 35
Explanation:
? = (24 * 5 * 7 * 9) / 216 = 35
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The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?
The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?A. 3000
B. 2500
C. 4500
D. 5000
Sum of the salaries of the person for the months of January, February, March and April = 4 * 8000 = 32000 —-(1)
Sum of the salaries of the person for the months of February, March, April and May = 4 * 8500 = 34000 —-(2)
(2)-(1) i.e. May – Jan = 2000
Salary of May is Rs.6500
Salary of January = Rs.4500The Compound interest on Rs 16000 for 9 months at 20% P.a compounded quarterly is:__________?
The Compound interest on Rs 16000 for 9 months at 20% P.a compounded quarterly is:__________?A. Rs 2518
B. Rs 2520
C. Rs 2522
D. Rs 2524
Explanation:
P = Rs 16000, R = (10/2)%
per quarter, t = 3 quarters
C.I = Rs [16000 × (1+ 5/100)3-16000)
= Rs [16000 × 21/20 ×21/20× 21/20- 16000)
=Rs (18522-16000)=Rs 2522The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?
The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?A. 308 sq cm
B. 220 sq cm
C. 440 sq cm
D. 132 sq cm
r = 7 h = 3
2πr(h + r) = 2 * 22/7 * 7(10) = 440The altitude of an equilateral triangle of side 2√3 cm is_________?
The altitude of an equilateral triangle of side 2√3 cm is_________?A. 3/2 cm
B. 1/2 cm
C. 3/4 cm
D. 3 cmA cuboidal, block of 6 cm X 9 cm X 12 cm is cut up into an exact number of equal cubes. The least possible number of cubes will be_________?
A cuboidal, block of 6 cm X 9 cm X 12 cm is cut up into an exact number of equal cubes. The least possible number of cubes will be_________?A. 6
B. 9
C. 24
D. 30
Volume of block = (6 X 9 X 12) cm3 = 648 cm3.
Side of largest cube = H.C.F. of 6 cm, 9 cm, 12 cm = 3 cm.
Volume of this cube = (3 X 3 X 3) = 27 cm3.
Number of cubes = 648/27 = 24.LCM of 18 and 27 is_________?
LCM of 18 and 27 is_________?A. 85
B. 89
C. 54
D. 91