Question

3. What is the sign and ones digit of the number when (–11) is multiplied
with itself 6 times consecutively?
4. We entered the lift on the 16th floor. We got out of the lift on the 4th
floor. How many floors did we travel downwards?
5. A diver was collecting water samples from a lake. He collected a
sample at every interval of 3 m, starting at 5 m below the water surface.
The final sample was collected at a depth of 35 m. How many samples
did he collect?

Answer 1

answer of 3. no. is :-

sign (+)