Rationale: 1/2 * 20(9 + 6) = 150 cm2
The answer: (B)
Question: Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm?
Options:
(A) 288
(B) 150
(C) 77
(D) 166
(E) 1812
Reasoning: 30^n = 2^n * 3^n * 5^n
100! has 97 2's, 48 3's and 24 5's
Since each of 2, 3 and 5 is required to form 30 and there are only 24 5's there can only be 24 30's in 100!
Ans: (B)
Question: If 100!/30^n is an integer, which of the following is the greatest possible value of n?
Options:
(A) 28
(B) 24
(C) 20
(D) 15
(E) 10
Rationale: P(1 + 20/100)n > 2P or (6/5)n > 2
Now, (6/5 * 6/5 * 6/5 * 6/5) > 2. So, n = 4 years.
The answer: (B)
Question: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?
Options:
(A) 6
(B) 4
(C) 5
(D) 3
(E) 1
Reasoning: 44 + 14 + 10 = 68%
100 – 68 = 32%
850 * 32/100 = 272
Ans: (E)
Question: In a school of 850 boys, 44% of Muslims, 14% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Options:
(A) A) 125
(B) B) 627
(C) C) 153
(D) D) 721
(E) E) 272
Rationale: Formula = Third proportional = (b × b)/a
A = 2 and B = 8
(8 x 8 )/ 2 = 64/2 = 32
The answer: (B)
Question: Find the third proportional to 2 and 8?
Options:
(A) 10
(B) 32
(C) 36
(D) 19
(E) 20
Rationale: (30*30)/100 = 9%loss
The answer: (A)

Question: A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?
Options:
(A) 9
(B) 8
(C) 7
(D) 5
(E) 3
Rationale: 1/2 * 20(9 + 6) = 150 cm2
The answer: (B)
Question: Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm?
Options:
(A) 288
(B) 150
(C) 77
(D) 166
(E) 1812
Reasoning: 30^n = 2^n * 3^n * 5^n
100! has 97 2's, 48 3's and 24 5's
Since each of 2, 3 and 5 is required to form 30 and there are only 24 5's there can only be 24 30's in 100!
Ans: (B)
Question: If 100!/30^n is an integer, which of the following is the greatest possible value of n?
Options:
(A) 28
(B) 24
(C) 20
(D) 15
(E) 10
Rationale: P(1 + 20/100)n > 2P or (6/5)n > 2
Now, (6/5 * 6/5 * 6/5 * 6/5) > 2. So, n = 4 years.
The answer: (B)
Question: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?
Options:
(A) 6
(B) 4
(C) 5
(D) 3
(E) 1
Reasoning: 44 + 14 + 10 = 68%
100 – 68 = 32%
850 * 32/100 = 272
Ans: (E)
Question: In a school of 850 boys, 44% of Muslims, 14% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Options:
(A) A) 125
(B) B) 627
(C) C) 153
(D) D) 721
(E) E) 272
Rationale: Formula = Third proportional = (b × b)/a
A = 2 and B = 8
(8 x 8 )/ 2 = 64/2 = 32
The answer: (B)
Question: Find the third proportional to 2 and 8?
Options:
(A) 10
(B) 32
(C) 36
(D) 19
(E) 20
Rationale: (30*30)/100 = 9%loss
The answer: (A)

user
Question: A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?
Options:
(A) 9
(B) 8
(C) 7
(D) 5
(E) 3
assistant
Rationale: 1/2 * 20(9 + 6) = 150 cm2
The answer: (B)
Question: Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm?
Options:
(A) 288
(B) 150
(C) 77
(D) 166
(E) 1812
Reasoning: 30^n = 2^n * 3^n * 5^n
100! has 97 2's, 48 3's and 24 5's
Since each of 2, 3 and 5 is required to form 30 and there are only 24 5's there can only be 24 30's in 100!
Ans: (B)
Question: If 100!/30^n is an integer, which of the following is the greatest possible value of n?
Options:
(A) 28
(B) 24
(C) 20
(D) 15
(E) 10
Rationale: P(1 + 20/100)n > 2P or (6/5)n > 2
Now, (6/5 * 6/5 * 6/5 * 6/5) > 2. So, n = 4 years.
The answer: (B)
Question: The least number of complete years in which a sum of money put out at 20% C.I. will be more than doubled is?
Options:
(A) 6
(B) 4
(C) 5
(D) 3
(E) 1
Reasoning: 44 + 14 + 10 = 68%
100 – 68 = 32%
850 * 32/100 = 272
Ans: (E)
Question: In a school of 850 boys, 44% of Muslims, 14% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Options:
(A) A) 125
(B) B) 627
(C) C) 153
(D) D) 721
(E) E) 272
Rationale: Formula = Third proportional = (b × b)/a
A = 2 and B = 8
(8 x 8 )/ 2 = 64/2 = 32
The answer: (B)
Question: Find the third proportional to 2 and 8?
Options:
(A) 10
(B) 32
(C) 36
(D) 19
(E) 20
Rationale: (30*30)/100 = 9%loss
The answer: (A)

Question: A man sells two articles for Rs.3600 each and he gains 30% on the first and loses 30% on the next. Find his total gain or loss?
Options:
(A) 9
(B) 8
(C) 7
(D) 5
(E) 3