Question # 1

Fifteen girls compete in a race. The first three places can be taken by them in

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3! ways

12! ways

15 x 14 x 13 ways

42 ways

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a^xIn a + c

a^x+ c

x a^x+ c

The interval in which f(x)=x3-6x2+9x is increasing

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1<x<3

x<1 and x>3

X ≥1 and x ≤ 3

-∞ < x < ∞

If m and n be two scalars, then (m+n) g =

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0

m+n

m▁a+n▁a

ma - m▁a

The directrix of y2 =-4ax is

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y =-a

y = a

x = a

x = -a

Te order of the differential equation of all conics whose axes coincide with the axes of co-ordinates is

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2

3

4

1

The coefficient of xn in the expansion of (1-2x)-1 is

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(-1)n2n

2n

(-1)(n+1)xr

(n+1)2n

If f(x) = cos x then f(0) is

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0

1

1/2

The conic is a parabola if

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e < 1

e > 1

e = 1

None of these

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a tan(ax + b) + c

- a tan(ax + b) + c

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