is
1) a positive rational number
2) a negative rational number
3) either a positive or a negative rational number
4) neither a positive nor a negative rational number

If    a  then a is

i) 122                               ii) 0
iii) 16 4)                            iv)  -16

If of 49 + 20% of 130 is equal to x + 49, then x is
i) 10                    ii) 12
iii) 16                  iv) 18

If a = 1⁴ ,b = 4⁰ ,c = 0⁴ and d = 4¹, then
1) a = b                  2) b = c
3) a = c                   4) a = d

If the length and width of a tape are 2m and 28cm respectively, then they are in the ratio of
1) 100 : 16                             2) 7 : 50
3) 50 : 7                                 4) 1 : 8

A shopkeeper gives 10% discount on a T.V. set. If the list price of the T.V. sets is Rs. 16,500, find the amount which is a customer has to pay for buying the T.V. set if the rate of sales tax is 10%.

i) 25.034                                 ii) 25.304

iii) 25.64                                  iv) 25.0034