self
Maths Puzzle
Two c ars A and B start simultaneously from two points P and Q with certain speeds towards
each other. After reaching a point R, speed of A dec reases by 1/3. It then meets B at a po int S where
SQ = 2PR. If he speed of A had beco me 1/3 less at the midpoint of RS the c ars would hav e met at T
w here ST = PR/4. Find RS: PR.
(a) 5: 1 (b) 6: 1 (c) 8:1 (d) 10:1
Read Solution (Total 0)
self Other Question
61)What will be the next term in the series 1,7,8,49,50,56,57,343…….?
a)344 b)350 c)2401 d)cannot be determined
62.)In a 3X3 square grid comprising 9 tiles each tile can be painted in red or blue color .when the tile is rotated by 180 degree ,there is no difference which can be spotted .how many such possibilities are there?
a)16 b)32 c)64 d)256
63.)In a staircase there are 10 steps .A child is attempting to climb the staircase .Each time she can either make 1 step or 2 steps .In how many ways can she climb the staircase?
a)10 b)21 c)36 d)none
64.)A boy buys 18 sharpeners (white or brown) for Rs100.For every white sharpener he pays one rupee more than the brown sharpener .What is the cost of the white sharpener and how much did he buy?
a)5,13 b)5,10 c)6,10 d)none of these
65.)A man asks 5 people to make a guess about the amount of money in his pocket which is less than Rs.50.
A guesses that the amount is multiple of 10.
B guesses that the amount is multiple of 12.
C guesses that the amount is multiple of 15.
D guesses that the amount is multiple of 18.
E guesses that the amount is multiple of 30.
Which of the following guesses are correct?
a)AE b)AB c)BC d)DE
65.The letter of the alphabet are numbered from 1 to 26 consecutively with assigned to A and 26 assigned to Z.By 27th letter we mean A,28th we mean B etc.In general 26m+n where m and n are positive integers is same as the letter number n.
Let p=6.The first time a letter occurs it is replaced by pth letter from it,second time it occurs it is replaced by p^2nd letter from it,third time it occurs it is replaced by p^3rd from it.
66.) Of a set of 30 nos average of first 10 numbers is equal to the average of last 20 numbers.The sum of last 20 numbers is ?
a)2*sum of last 10 numbers.
b)2*sum of first 10 numbers.
c)sum of first 10 numbers.
d)cannot be determined.
67.)In how many ways a team of 11 members must be selected from 5 men and 11 women such that the team comprises of not more than 3 men?
a) 1565 b) 2256 c) 2456 d) 1243
68.)The wages of 24 men and 16 women amount to Rs.11600 per day.Half the number of number of men and 37 women earn the same money.The daily wages paid to each men is
a) Rs.375 b)Rs.40 c)Rs.350 d)Rs.325
69.) A number when successively divide by 5,3,2 gives a remainder of 0,2,11 respectively in that order.What will be the remainder when the same number is divided successively by 2,3 and 5 in that order?
a) 4,3,2 b) 1,0,4 c) 2,1,3 d) 4,1,2
70.) A alone can do 1/4th of the work in 2 days.B alone can do 2/3rd of work in 4 days.If all the three work together they can complete it in 3 days so what part of the work will be completed by c in 2 days?
a)1/12 b) 1/45 c) 1/8 d)1/24
71)Six persons A,B,C,D,E,F are invited for party
1)A accept invitation only if B or F accepts
2)C may accept if B accepts
3)F will accept if B,C,D accepts
4)E and B accept if D accepts
What is the possible order in which they accept their invitations?
a) DBECFA b)DCBEFA c)DABEFC d)BFDECA
73)A takes 12 hours to make a publication.B takes 10 hours to make a publication.Find the time taken by them to make two publications,working independently
a)12hrs b)11hrs c)22hrs d)11hrs 40min
74.) what is the value of 13x+13y ?
a) 117 b)169 c)91 d)130
8 1 7 3
X 6 7 8
9 2 3 1 6
4 7 5 6
7 9 Y 1 2
6 3 4 9
4 9 2 1 6
6 5 4
7 8 5 9
75.) how many size 2 and size 4 triangles can be formed?
a) 20 b)21 c)45 d)45
76.If all the number between 11 and 100 are written on a piece of paper, how many times will the number 4 be used?
a)20 b)19 c)9 d)none
77. In a school, sixty percent of the students are girs and thirty five percent of the girls are poor. If a student is randomly selected, what is the probability of selecting a poor girl student?
A, 60% b,35% c,21% d,none
4+3=10
7+5=29
8+6=??