Which of the following is
larger than 3/5?
(1) ½ (2) 39/50
(3) 7/25 (4) 3/10
(5) 59/100
Answer:
(2)
The number that does not
have a reciprocal is ____________.
Answer:
1
Explanation:
One is the only number exists without reciprocal because the reciprocal of one
is one itself.
There are 3 persons Sudhir,
Arvind, and Gauri. Sudhir lent cars to Arvind and Gauri as many as they had
already. After some time Arvind gave as many cars to Sudhir and Gauri as many as
they have. After sometime Gauri did the same thing. At the end of this
transaction each one of them had 24. Find the cars each originally had.
Answer:
Sudhir had 39 cars, Arvind had 21 cars and Gauri had 12 cars.
A man bought a horse and a
cart. If he sold the horse at 10 % loss and the cart at 20 % gain, he would not
lose anything; but if he sold the horse at 5% loss and the cart at 5% gain, he
would lose Rs. 10 in the bargain. The amount paid by him was Rs._______
for the horse and Rs.________
for the cart.
Answer:
Cost price of horse: Rs. 400 &
Cost price of cart: Rs. 200
Explanation:
Let x be the cost of horse & y be the cost of the cart.
10 % of loss in selling horse = 20 % of gain in selling the cart
Therefore (10 / 100) * x = (20 * 100) * y
è x = 2y -----------(1)
5 % of loss in selling the horse is 10 more than the 5 % gain in selling the
cart.
Therefore (5 / 100) * x - 10 = (5 / 100) * y
è 5x - 1000 = 5y
Substituting (1)
10y - 1000 = 5y
5y = 1000
y = 200
x = 400 from (1)
For the following, find the
next term in the series
6, 24, 60,120, 210 ?
a) 336 b) 366 c) 330
d) 660
Answer :
a) 336
Explanation : The series is 1.2.3, 2.3.4, 3.4.5, 4.5.6, 5.6.7, ..... ( '.' means
product)
1, 5, 13, 25 ?
Answer :
41
Explanation : The series is of the form 0^2+1^2, 1^2+2^2,...
0, 5, 8, 17 ?
Answer :
24
Explanation : 1^2-1, 2^2+1, 3^2-1, 4^2+1, 5^2-1
1, 8, 9, 64, 25 ? (Hint : Every successive terms are
related)
Answer :
216
Explanation : 1^2, 2^3, 3^2, 4^3, 5^2, 6^3
8,24,12,36,18,54 ?
Answer :
27
71,76,69,74,67,72 ?
Answer :
67
5,9,16,29,54 ?
Answer :
103
Explanation : 5*2-1=9; 9*2-2=16; 16*2-3=29; 29*2-4=54; 54*2-5=103
1,2,4,10,16,40,64 ?(Successive terms are
related)
Answer :
200
Explanation : The series is powers of 2 (2^0,2^1,..).
All digits are less than 8. Every second number is in octal number system.
128 should follow 64. 128 base 10 = 200 base 8.
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