- Sum of A’s and B’s age 6 years ago is 88. A’s age 18 yrs ago is equal to B’s age 6 years ago. Find the age of A two year hence?
51 years62 years58 years44 years50 yearsOption C

A+B = 88+12 = 100 –(1)

A-18 = B-6 A-B = 12 –(2)

On solving these two equations, A = 56

After 2 years = A = 58 years - Train A of length 120 m can cross a platform of length 240 m in 18 second the ratio of speed of train A and Train B is 4 : 5. Then find the length of Train B if train B can cross a pole in 12 seconds.
700 m600 m500 m300 m400 mOption D

Let speed of train A be S

S × 18 = 360

S = 20 m/s

A : B = 4 : 5

Speed of B = 25 m/s

Length of train B = 25 × 12 = 300 m - Sum of volume of cylinder (S) and volume off cone (C) is 2190𝝅 cm² & height of both cylinder and cone is same i.e, 10 cm. If radius of cone is 15 cm then find the ratio of radius of S to radius of C?
4:52:35:61:23:1Option A

Pi*r*r*h + 1/3*pi*R*R*h = 2190*pi

=>r/R = 4:5 - In an alloy, zinc and copper are in the ratio 1 : 2. In the second alloy the same elements are in the ratio 2 : 3. In what ratio should these two alloys be mixed to form a new alloy in which the two elements are in ratio 5 : 8?
9/133/102/75/84/11Option B

Zinc = 5/13-1/3 = 1/65

Copper = 2/5-5/13 = 2/39

Required ratio = (1/ 65)/(2/39) = 3/10 - In a box there are 6 blue ball, x red balls & 10 green balls. Probability of choosing one red ball from the given box is 𝟏/𝟑 . Then find the sum of red and blue balls in the box?
1416101820117.5, 117, 119, 111, 143, ?Option A

x /(x + 16) = 1/3

=>3x = x + 16

=>x = 8

sum of red & blue balls = 8 + 6 = 14 - 117.5, 117, 119, 111, 143, ?
2010251530Option D

-0.5

+2

-8

+32

-128

? = 15 - 3, 11, 31, 69, 131, ?
200223274250291Option B

1^3+2

2^3+3

3^3+4

4^3+5

5^3+6

6^3+7

? = 223 - 12, 25, 48, 99, 194, 393, ?
666745780720851Option C

*2+1

*2-2

*2+3

*2-4

*2+5

*2-6

? = 780 - 1, 13, 83, 419, 1679, ?
63155522633541025039Option E

*7+6

*6+5

*5+4

*4+3

*3+2

? = 5039 - 15, 12, 31, 148, ?
14421330121010271120Option D

*1-3

*3-5

*5-7

*7-9

? = 1027

**Directions(6-10):** Find the missing term ‘?’ of the following series.