Which of the following sources cannot be imported into Excel?

When a navigation toolbar is used with a table from a database, the first record of the table has index .When a navigation toolbar is used with a table from a database, the first record of the table has index .

(A) 0 (B) 1 (C) First (D) -1

The following conditional expression is written in the C language. It is false when variable a is assigned either 10 or 20 and true otherwise.

!(a = = 10 a = = 20) Which of the following conditional expressions is equivalent? a) a != 10 II b !=20 b) a<=1011b>=20 c) a< 101Ia> 20 d) a = = 10 && a = = 20 e) a != 10 && a != 20 f) !(a = = 10) && !(a = = 20)