Mathematics Questions & Answers for Competitive Exams

251. In an obtuse-angled triangle ABC, the length of its longest side AB is 50 cm and one of the other two sides is 42 cm. If the area of the triangle is 294 cm2, what is the length (in cm) of its third side?

(A)
(B)
(C)
(D)

252. In ΔABC,D and E are points on sides AB and AC, such that DE∥BC. If AD = x,DB = x - 3,AE = x + 3 and EC = x - 2, then the value of x is:

(A) 5.2
(B) 4.0
(C) 4.5
(D) 4.2

253. The following bar graph represents the total number of students enrolled and the number of students who got campus placement in six different engineering colleges A, B, C, D, E, and F. Study the graph carefully and answer the question given below: What per cent (correct up to two decimal places) of total enrolled students have got campus placements in colleges A, C, and F?

(A) 86.67%
(B) 77.78%
(C) 82.78%
(D) 79.67%

254. The surface area of a spherical ball is 1386 cm2. What will be its volume?

(A) 4825 cm3
(B) 5000 cm3
(C) 4851 cm3
(D) 4800 cm3

255. If the speed of a boat in still water is 3 km/h and if its speed upstream is 1 km/h, find the speed of the stream.

(A) 2 km/h
(B) 1 km/h
(C) 0.25 km/h
(D) 0.5 km/h

256. There are two circles touching each other externally. The radius of the first circle with centre O is 12 cm. The radius of the second circle with centre A is 5 cm. Find the length of their common tangent touching the two circles at points P and Q.

(A)
(B)
(C)
(D)

257. Find the whole surface area of a cuboid having a length of 19 cm, breadth of 9 cm and height of 4.5 cm.

(A)
(B)
(C)
(D)

258. If 640 ÷ 8 + 930 ÷ 15 – k + 32 × 5 = 1104 ÷ 16 × 148 ÷ 37, then the value of k is:

(A) 276
(B) 26
(C) 35
(D) 302

259. The sum of the present ages of a father and son is 50 years. If after 5 years, the father’s age will be 5 times the age of the son, then what was the father’s age 5 years ago?

(A) 36
(B) 47
(C) 43
(D) 40

260. Let C be a circle with center O and PQ be the diameter of C. Let AB be a chord on C. If ∠QOB = 40°, ∠AOP = 80°, then find ∠AOB.

(A) 100°
(B) 60°
(C) 90°
(D) 70°

Total Quizz:- 2541

Mathematics

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251. In an obtuse-angled triangle ABC, the length of its longest side AB is 50 cm and one of the other two sides is 42 cm. If the area of the triangle is 294 cm2, what is the length (in cm) of its third side?

252. In ΔABC,D and E are points on sides AB and AC, such that DE∥BC. If AD = x,DB = x - 3,AE = x + 3 and EC = x - 2, then the value of x is:

254. The surface area of a spherical ball is 1386 cm2. What will be its volume?

255. If the speed of a boat in still water is 3 km/h and if its speed upstream is 1 km/h, find the speed of the stream.

256. There are two circles touching each other externally. The radius of the first circle with centre O is 12 cm. The radius of the second circle with centre A is 5 cm. Find the length of their common tangent touching the two circles at points P and Q.

257. Find the whole surface area of a cuboid having a length of 19 cm, breadth of 9 cm and height of 4.5 cm.

258. If 640 ÷ 8 + 930 ÷ 15 – k + 32 × 5 = 1104 ÷ 16 × 148 ÷ 37, then the value of k is:

259. The sum of the present ages of a father and son is 50 years. If after 5 years, the father’s age will be 5 times the age of the son, then what was the father’s age 5 years ago?

260. Let C be a circle with center O and PQ be the diameter of C. Let AB be a chord on C. If ∠QOB = 40°, ∠AOP = 80°, then find ∠AOB.

Total Quizz:- 2541

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251. In an obtuse-angled triangle ABC, the length of its longest side AB is 50 cm and one of the other two sides is 42 cm. If the area of the triangle is 294 cm2, what is the length (in cm) of its third side?

252. In ΔABC,D and E are points on sides AB and AC, such that DE∥BC. If AD = x,DB = x - 3,AE = x + 3 and EC = x - 2, then the value of x is:

254. The surface area of a spherical ball is 1386 cm2. What will be its volume?

255. If the speed of a boat in still water is 3 km/h and if its speed upstream is 1 km/h, find the speed of the stream.

256. There are two circles touching each other externally. The radius of the first circle with centre O is 12 cm. The radius of the second circle with centre A is 5 cm. Find the length of their common tangent touching the two circles at points P and Q.

257. Find the whole surface area of a cuboid having a length of 19 cm, breadth of 9 cm and height of 4.5 cm.

258. If 640 ÷ 8 + 930 ÷ 15 – k + 32 × 5 = 1104 ÷ 16 × 148 ÷ 37, then the value of k is:

259. The sum of the present ages of a father and son is 50 years. If after 5 years, the father’s age will be 5 times the age of the son, then what was the father’s age 5 years ago?

260. Let C be a circle with center O and PQ be the diameter of C. Let AB be a chord on C. If ∠QOB = 40°, ∠AOP = 80°, then find ∠AOB.

Total Quizz:- 2541

Mathematics

English Topic Wise Quizz

Current Affairs Topic Wise Quizz

Hindi Topic Wise Quizz

Important Links

Subjects

Subjects

Exams