Statements:

Some tablets are laptops.

All laptops are mobiles.

No mobile is a notepad.

Conclusion:

I. Some tablets are mobiles.

II. Some notepads are not laptops.

III. Some tablets are not notepads.

Some tablets are laptops (I) + All laptops are mobiles. (A) Some tablets are mobiles. (I) + No mobile is a notepad. (E) Some tablets are not notepads. (O). Hence conclusion I and III follows. All laptops are mobiles. (A) + No mobile is a notepad. (E) No laptop is a notepad. (E) Conversion Some notepads are not laptops. (O). Hence conclusion II follows.

A train 450 m long running at 72 km/hr takes 45 seconds to cross a bridge The length of the bridge is

Two trains approach each other at 24 kmph and 31 kmph from 2 places 220 km apart. After how many hours they will meet?

A train 450 metre long takes 45 sec to cross a man running at a speed of 4 km/hr in the direction same to that of train. What is the speed of the train?

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