We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

What has one letter and starts with an E?

What does below pictogram mean?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

How many triangles can you count in the figure given?

What does below Rebus mean ?

esgg sgeg gegs gsge

You see me once in June, twice in November, and not at all in May. What am I?