1 mark Questions for board exam

1.If the point A (X,2), B (-3, 4) and C17-5) are collinear, then the value of x is:
(a) -63
(b) 63
(c) 60
(d) 60
2.The perimeter of a triangle with (0,4) ,(0,0) and (3,0) is :
(a) 5
(b) 12
(c) 11
(d) 4
3. ABC and BDE are two equilateral triangles such that D is the mid-point of BC. Ratio of the area of triangles ABC and BDE is :
(a) 2:1
(b) 1:2
(c) 4:1
(d) 1.4
4.Two A.Ps. have the same common difference. The first term of one of these is -1 and that of the other is -8. Then the difference between their 4  terms is :
(a) -1
(b) -8
(c) 7
(d) -9
5.The famous mathematician associated with finding the sum of the first 100 natural numbers is:
(a) Pythagoras
(b) Newton
(c) Gauss
(d) Euclid
6. In an A.P, if a = 1, L = 20 and Sum =399, then  n is:
(a) 19
(b) 21 
(c) 38
(d) 42

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