1
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

G.M. and H.M. of two numbers are 10 and 8 respectively. The numbers are

A
5, 20
B
4, 25
C
2, 50
D
1, 100
2
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

The value of n for which $${{{x^{n + 1}} + {y^{n + 1}}} \over {{x^n} + {y^n}}}$$ is the geometric mean of x and y is

A
$$n = - {1 \over 2}$$
B
$$n = {1 \over 2}$$
C
n = 1
D
n = $$-$$ 1
3
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

If angles A, B and C are in A.P., then $${{a + c} \over b}$$ is equal to

A
$$2\sin \left( {{{A - C} \over 2}} \right)$$
B
$$2\cos \left( {{{A - C} \over 2}} \right)$$
C
$$\cos \left( {{{A - C} \over 2}} \right)$$
D
$$\sin \left( {{{A - C} \over 2}} \right)$$
4
WB JEE 2010
MCQ (Single Correct Answer)
+1
-0.25

The value of $${2 \over {3!}} + {4 \over {5!}} + {6 \over {7!}} + $$ ............ is

A
e1/2
B
e$$-$$1
C
e
D
e1/3
WB JEE Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12