Bank Exams Questions

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A computer system consists of two major elements: hardware and software. Computer hardware is the collection of all the parts you can physically touch. Computer software, on the other hand, is not something you can touch. Software is a set of instructions for a computer to perform specific operations. You need both hardware and software for a computer system to work.

10 examples of computer hardware are ::

1. Monitor

2. Motherboard

3. CPU(Microprocessor) 

4. Main memory(RAM)

5. Expansion cards 

6. Power supply unit

7. Optical disc drive 

8. Hard disk drive (HDD)

9. Keyboard

10. Mouse

From the given information in the question
24 ÷ 4 + 6 - 3 x 4
6 + 6 - 12 = 0

Quantity of fruit juice in the mixture = 70 - [70 x (10/100) ]= 63 litres.

After adding water, juice would form 87.5% of the mixture.

Hence, if quantity of mixture after adding x liters of water, [(87.5) /100 ]*x = 63 => x = 72 

Hence 72 - 70 = 2 litres of water must be added.

LCM of (80, 85, 90) can be found by prime factorizing them.

80 → 2 × 2 × 2 × 2 × 5

85 → 17 × 5

90 → 2 × 3 × 3 × 5

L.C.M of (80,85,90) = 2 × 2 x 2 × 2 × 3 × 3 × 5 × 17

= 16 x 9 x 85

= 144 x 85

= 12240

L.C.M of (80,85,90) = 12240.