Question77:-The expansion of *(a+b)*n `

Correct Answer:- Option-C
Question78:-If ` € (1)` is the eccentricity of the conic ‘9x*2+16y*2=144° ` ` conic and `€ (2) is the eccentricity of the
conic ‘9x*2+16y*2=144", then
A: e*2_1-e*2_2=2°
B:e*2_2-e*2_1=2°
௦:2252 1252 2012:
0:22 2:22 142
Correct Answer:- Option-D
Question79:-The probability that a non leap year chosen at random has 52 Fridays is
‏7ھ‎
‎8:7
‎C:-0
‎D:-6/7
‎Correct Answer:- Option-D
Question80:-Two finite sets have m and n elements. The total number of subsets of the first set is 48 more than the total
number of subsets of second set. The values of mand n are
A:-6 and 4
B:-2 and 3
C:-6 and 2
D:-3 and 4
Correct Answer:- Option-A
Question81:-The solution of the equation "33-14 and 4x+8y=8 is
‏3ھ‎ 72
8:-1 and 2
C:-4 and -1
D:-2 and -1
Correct Answer:- Option-C
Question82:- lim_(x->5)(x*2+x-30)/(x-5)=
A:-0
B:-5
C:-not defined
D:-11
Correct Answer:- Option-D
Question83:-in an A.P (arithmetic progression) 8-7, d=3.5, ` 8 1=10.5 `
Then n is *
۵:1
B:-2
C:-3
D:-4
Correct Answer:- Option-B
Question84:-The perimeter of a triangle with vertices (0,6), (0,0), and (8,0) is:
A:-10
B:-14
C:-24
D:-26
Correct Answer:- Option-C
Question85:-A circle can have parallel tangents at the most
A:-0
B:-1 pair
C:-2 pair
D:-infinite
Correct Answer:- Option-B
Question86:-If the standard deviation of a set of observation is 16 and each observation is divided by -4. The standard
deviation of the new set of observation will be:
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