Hello frds , we put another 15 new pattern questions of tcs. try to solve it your self if you can't then comment your question in post so we are able to give ans you and it's useful to all....
1) Find X^y+y^x=46 then Find X and Y values ans:x=1 and y=45 or y=1 and x=45
2) George and Mark can paint 720 boxes in 20 days. Mark and Harry in 24 days and Harry and George in 15 days. George works for 4 days, Mark for 8 days and Harry for 8 days. The total number of boxes painted by them is
a) 252 b) 516 c) 348 d) 492
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3) Consider all permutations of digits 1,2&3.We will say that a hit has been scored if at least one digit occurs in its proper position in the permutation.If 1 occurs in the first position or 2 in the second position or 3 in the 3rd position in how many ways of these permutations is a hit scored? (a)4(b)1(c)2(d)3
4) probability of getting sum of 10 by throwing 3 dice
5) If i decrease my speed by 30% of my original speed. I reach my office 8 min. late. What is my usual time taken to reach the office?
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6) The mean of three number is 10 more than the least of these number and 15 less than the greatest of the Three. If the median of the three number is 5, then sum of the three is
a)30 b)20 c)5 d)25
7) Which of the following numbers must be added to 5678 to give a remainder of 35 when divided by 460?
a) 980 b) 797 c) 955 d) 618
8) F(n) is a function,where f(f(n))+f(n)=2n+3.F(n)=0;find f(2012)will be
9) (2^1096+2^2248+2^2n)find the value of n so that the value will be perfect square
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10) A drawer holds 4 red hats and 4 blue hats,what is the probability of getting exact three red hats or exact 3 blue hats when taking out 4 hats randomly out of the drawer and immediately returning every hat to the drawer before taking out the next.
(a)1/2(b)1/8(c)1/4(d)3/8
ANS:
probability of taking a particular hat is 1/2 ( 4/8)
Now assume we have 2 take 3 blues and 1 red
P(BBBR) = (1/2)^4
P(BBRB) = (1/2)^4
P(BRBB) = (1/2)^4
P(RBBB) = (1/2)^4
total = 4 * (1/2)^4 similarly with red thus the total is 2*4*1/16 = 8/16 = 1/2
11) 1,3,1,2.5,5,1,4,5,4,8,7,?? 12) if p(x)=ax^4 + bx^3 + cx^2 + dx + e has roots at x=1,2,3,4 and p(0)=48, what is p(5)?
(1)48 (2)24 (3)0 (4)50
13) what is the unit digit of 21^3*21^2*34^7*46^8*77^8 ?
14) The sequence is defined by A(1)=2 and A(n+1)=A(n)+2n What is the value of A(100)
(1)9902 (2)9900 (3)10100 (4)9904
15) x + y = 8 and 1/x + 1/y = 2/3 then product of x and y will be......... Like us on facebook:http://www.facebook.com/pages/Placement-preparation-and-Web-design/207321382695891
1) Find X^y+y^x=46 then Find X and Y values ans:x=1 and y=45 or y=1 and x=45
2) George and Mark can paint 720 boxes in 20 days. Mark and Harry in 24 days and Harry and George in 15 days. George works for 4 days, Mark for 8 days and Harry for 8 days. The total number of boxes painted by them is
a) 252 b) 516 c) 348 d) 492
Like us on facebook:http://www.facebook.com/pages/Placement-preparation-and-Web-design/207321382695891
3) Consider all permutations of digits 1,2&3.We will say that a hit has been scored if at least one digit occurs in its proper position in the permutation.If 1 occurs in the first position or 2 in the second position or 3 in the 3rd position in how many ways of these permutations is a hit scored? (a)4(b)1(c)2(d)3
4) probability of getting sum of 10 by throwing 3 dice
5) If i decrease my speed by 30% of my original speed. I reach my office 8 min. late. What is my usual time taken to reach the office?
Like us on facebook:http://www.facebook.com/pages/Placement-preparation-and-Web-design/207321382695891
6) The mean of three number is 10 more than the least of these number and 15 less than the greatest of the Three. If the median of the three number is 5, then sum of the three is
a)30 b)20 c)5 d)25
7) Which of the following numbers must be added to 5678 to give a remainder of 35 when divided by 460?
a) 980 b) 797 c) 955 d) 618
8) F(n) is a function,where f(f(n))+f(n)=2n+3.F(n)=0;find f(2012)will be
9) (2^1096+2^2248+2^2n)find the value of n so that the value will be perfect square
Like us on facebook:http://www.facebook.com/pages/Placement-preparation-and-Web-design/207321382695891
10) A drawer holds 4 red hats and 4 blue hats,what is the probability of getting exact three red hats or exact 3 blue hats when taking out 4 hats randomly out of the drawer and immediately returning every hat to the drawer before taking out the next.
(a)1/2(b)1/8(c)1/4(d)3/8
ANS:
probability of taking a particular hat is 1/2 ( 4/8)
Now assume we have 2 take 3 blues and 1 red
P(BBBR) = (1/2)^4
P(BBRB) = (1/2)^4
P(BRBB) = (1/2)^4
P(RBBB) = (1/2)^4
total = 4 * (1/2)^4 similarly with red thus the total is 2*4*1/16 = 8/16 = 1/2
11) 1,3,1,2.5,5,1,4,5,4,8,7,?? 12) if p(x)=ax^4 + bx^3 + cx^2 + dx + e has roots at x=1,2,3,4 and p(0)=48, what is p(5)?
(1)48 (2)24 (3)0 (4)50
13) what is the unit digit of 21^3*21^2*34^7*46^8*77^8 ?
14) The sequence is defined by A(1)=2 and A(n+1)=A(n)+2n What is the value of A(100)
(1)9902 (2)9900 (3)10100 (4)9904
15) x + y = 8 and 1/x + 1/y = 2/3 then product of x and y will be......... Like us on facebook:http://www.facebook.com/pages/Placement-preparation-and-Web-design/207321382695891
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