## Aptitude | Trigonometry & Height and Distances | Question 3

If tan (x+y) tan (x-y) = 1, then find tan (2x/3)? (A) 2/√3 (B) 1/2 (C) 1/√2 (D) 1/√3 Answer: (D) Explanation: tanA = cotB,… Read More »

## Aptitude | Trigonometry & Height and Distances | Question 2

What is minimum value of Sinθ + cosθ ? (A) -2 (B) 1/2 (C) -1 (D) -√2 Answer: (D) Explanation: Minimum value = √(a2 –… Read More »

## Aptitude | Trigonometry & Height and Distances | Question 1

What is the maximum value of 5 Sinθ + 12 cosθ? (A) 16 (B) 13 (C) 10 (D) 12 Answer: (B) Explanation: Maximum value =… Read More »

## Aptitude | Progressions | Question 8

Find the sum of series: 1/3, 1/9, 1/27, 1/81…………….. (A) 1/2 (B) 1/3 (C) 1/4 (D) 1/6 Answer: (A) Explanation: Sn=a/(1-r) = (1/3)/(1-1/3) =1/2 Quiz… Read More »

## Aptitude | Progressions | Question 7

Find the sum of series: 1, 3, 9, 27, 81, …………..39 (A) [(1-310)]/(1-3) (B) 18 (C) 10 (D) 20 Answer: (A) Explanation: Sol: Sn=[a(1-rn)]/(1-r) =[1(1-310)]/(1-3)… Read More »

## Aptitude | Progressions | Question 6

Find Arithmetic Mean of series: 2, 2.5, 3, 3. 5, 4, 4. 5……….11 (A) 13/2 (B) 25/8 (C) 19 (D) 22/9 Answer: (A) Explanation: AM… Read More »

## Aptitude | Progressions | Question 5

Find sum of series: 2, 2.5, 3, 3. 5, 4, 4. 5……….11 (A) 120 (B) 123.5 (C) 126.5 (D) 118.5 Answer: (B) Explanation: sum of… Read More »

## Aptitude | Progressions | Question 4

Find the Sum of series: 10, 7, 4, 1, -2 (A) 40 (B) 21 (C) 20 (D) 18 Answer: (C) Explanation: Sum of series =… Read More »

## Aptitude | Progressions | Question 2

Find the Sum of series: 2, 6, 10, 14, 18, 22, 26, 30 (A) 32 (B) 88 (C) 128 (D) 110 Answer: (C) Explanation: Sum… Read More »

## Aptitude | Race | Question 5

Ram and Sita participate in a race of 1000 meters. If Ram gives Sita a start of 200 meters or 20 seconds. In ow much… Read More »

## Aptitude | Race | Question 4

If Mohan can give a start of 50 m of distance or 10 s of time to Rohan in a race of 1000 meters. How… Read More »

## Aptitude | Race | Question 2

If Geeta can give a start of 100 m of distance or 20 s of time to her friend Meena in a race of 1000… Read More »

## Aptitude | Mensuration 3D | Question 5

A drum is full of water. Diameter of the drum is 35cm. The level of water will be dropped by how much, if 11 litres… Read More »

## Aptitude | Mensuration 3D | Question 4

A cube with sides of 5 cm is painted on all its faces. If sliced in 1 cm cubes, how many 1 cm cubes will… Read More »

## Aptitude | Mensuration 3D | Question 3

A 5 cm cube is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the original… Read More »