In OOo Calc formula starts with …………… .

1. +
2. [= sign]
3. -
4. *

In …………… referencing the relative address of the cell gets adjusted w.r.t. the current cell.

1. Relative
2. Absolute
3. Mixed
4. Nil

To create an absolute cell reference …………… sign is used before the parts of formula.

1. $ sign
2. #
3. ^
4. %

Calc worksheets are given …………… extension.

1. .odf
2. [= sign]
3. .ods
4. .odw