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All posts related to Mathematics

Kiran Dixit
Shared from Sequence and Series - 1 on Mar 28, 2020 7:42 PM

If 3 + 5 + 7 + n (terms) 5 + 8 + 11 + + 10 terms = 7 , then the value of 'n' is

 
35
10
37
None of these
Please type your answer before submitting.

I didnt get the solution how come

Varun Krishnan
Shared from Relations and Functions (Easy) on Sep 06, 2019 10:22 AM

Let f be a function satisfying 2f(x) – 3f ( 1 x ) = x2 for any x 0. The value of f(2) is:

 
-2
7 4
7 8
4
Please type your answer before submitting.

the third line is wrong it should be 5f(2) - 5f(1/2) = 4 - 1/4 = 15/4

Shrikrishan
Shared from Numerical Ability 1 on Jun 05, 2019 1:50 AM

Out of 28 marbles in a box, 6 are red, 5 are blue and the remaining are white. If Bill selects marbles at random while packing, what is the least number he must remove from the box to be sure that he has 3 marbles of the same colour?

 
4
7
9
13
Please type your answer before submitting.

Why 4 is not right answer if it take 4,0,0

Himanshu Mittal
Shared from NIMCET Mock - 5 on May 25, 2019 10:34 AM

If , and are non-coplanar unit vectors such that ( ) = , then the angle between and is

 
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Why is there a math question in computer section??

Prabhat Kumar Swain
Shared from Mixed Test (B.Ed /M.Ed) on May 20, 2019 9:04 AM

Directions: Four students W, X, Y, Z appeared in four papers; I, II, III and IV in a test. Their scores out of 100 are given below.

Students Papers
I II III IV
W 60 81 45 55
X 59 43 51 A
Y 74 A 71 65
Z 72 76 A 68
Where 'A' stands for absent

Which candidate has secured the highest percentage in the papers appeared?

 
W
X
Y
Z
Please type your answer before submitting.

Why z why not w