8. If k = - 2 then

   k³ + k² - k = (-2)3 + (- 2)² - (-2)

   = - 8 + 4 + 2

   = - 8 + 6

   = - 2

   Ans : E

9.    = 60

   The even integers that divide 60 are 2, 4, 6, 10, 12, 20, 30, 60.

   The greatest integer is 60.

   Ans : D

10. All the divisors are odd: 5, 25, 125, 625, 3125

    Ans : E

11. In D BCD

    Ð CDB + Ð DBC + Ð DCB = 180 (the sum of angles of a triangle is 180) 2s + 2t + 50 = 180

    2 (s + t) = 130

    s + t = 65

    In D BED

    s + t + w = 180

    w = 180 - 65

    w = 115

    Ans : C

12. Area of circle L = 2 ´ 8p = 16p

    Area of circle N = 1/2 ´ 8p = 4p

    Sum of the areas of L, M & N

    = 4p + 8p + 16p

    = 28p

    Ans : B

        

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Index

Test 3

Test 4