Consider the following statements & choose the correct options

When two straight lines intersect then,

1. Adjacent angles are supplementary

2. Opposite angles are supplementary

In what ratio should Darjeeling Tea costing Rs. 400 per kg be mixed with Assam Tea costing Rs. 300 per kg. So that by selling the mixture at Rs. 408 per kg, there is a gain of 20%?

A bus is running at a speed of 90 kmph. What distance will it cover in 20 seconds?

Neeraj's earning was decreased by 60% and after that subsequently increased by 60%. Find the final loss % on his earnings?

Ramu can row 9 kmph in still water. It takes him twice as long to row up as to row down. Find the rate of stream.

Who invented the pendulum clock?

The APGAR scale measures the

the apgar scale measures the

Who designed the first electronic computer - ENIAC?