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The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per cm³.


A10440 cm³, 91250 g
B13440 cm³, 90000 g
C11440 cm³, 91520 g
DNone of these

A shopkeeper mixed kg of white rice with kg of brown rice. He packed them into 5 packets of equal weight. What was the weight of each packet of rice?

A2 Kg
B3 Kg
C4 Kg
D5 Kg

If × = 100, ÷ 2 = and + + + + = 100 ÷ , then find the value of .

A25
B10
C5
D4

In a school, there are 40 students in which boys and girls are in the ratio 3 : 1. The mean age of the boys is 20 years and the mean age of the girls is 18 years. If there is increase in girls by 5 and decrease in boys by 10, then find the new average age (approx.) when the students joining or leaving doesn't change the average age of boys and girls respectively.

A 15 years
B 19 years
C 16 years
D Can't say

Find the difference between the greatest and the smallest 8-digit numbers formed by using the digits 7, 4, 2, 8, 6, 1, 5, 0 (using each digit only once).

A77408532
B7470838
C6434534
D57408532

If and then

A
B
C
D

If + + + + = 35 and = + , then find the value of + .

A10
B18
C20
D15

Find the value of [(a - b)² (a + b)² (a + b)] ÷ (a² + 2ab + b²) (a² - 2ab + b²), when a = -1 and b = 2.

A1
B0
C10
D8

If O is centre of circle as shown in figure, ∠SOP = 102° and ∠ROP = ∠SOU = 72°, then find ∠OSU and ∠RTU respectively.


A54°, 93°
B45°, 110°
C54°, 96°
D45°, 94°

If then find the value of x and correct representation on the number line.

A
B
C
D