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(1) What is the least number to be added to 3986 to make it

**(1)** What is the least number to be added to 3986 to make it a perfect square ?

(a) 118 (b) 95 (c) 110 (d) 100 (e) None of these

**(2)** √3781 x 5.36 = ?

(a) 350 (b) 330 (c) 240 (d) 280 (e) None of these

**(3)** If (26)2 is subtract from square of a number, the answer so obtained is 549. What is the number ?

(a) 35 (b) 33 (c) 29 (d) 41 (e) None of these

**(4)** [(4)3 x (5)4 ] ÷ (4)5 = ?

(a) 30.0925 (b) 39.0625 (c) 35.6015 (d) 29.0825 (e) None of these

(5) 35% of 160 +?% of 180 = 50% of 310

(a) 35 (b) 55 (c) 65 (d) 45 (e) None of these

**(6)** 137% of 12345≈ ?

(a) 17000 (b) 15000 (c) 1500 (d) 14300 (e) 900

**(7)** (8.2% 365) – (1.75% of 108) = ?

(a) 16.02 (b) 28.04 (c) 42.34 (d) 53.76 (e) None of these

**(8)** (739% of 383) ÷ 628 ≈ ?

(a) 10.00 (b) 4.50 (c) 15.75 (d) 19.25 (e) 24.15

**(9)** 94.5% of 550 = ?

(a) 506.45 (b) 521.65 (c) 518.55 (d) 519.75 (e) None of these

**(10)** ………….. is the part of the computer that does the arithmetical calculations.

(a) Memory (b) OS (c) CPU

(d) ALU (e) None of these

**(11)** The CPU, also called the …………… when talking about Pcs, does the vast majority of the processing for a computer.

(a) macroprocessor (b) RAM (c) Memory System

(d) microprocessor (e) None of these

**(12)** A computer’s type, processor, and operating system define its.

(a) brand (b) size (c) platform

(d) speed (e) None of these

**(13)** The part of the Central processing unit (CPU) that accesses and decodes program instructions and coordinates the flow of data among various system components is the

(a) ALU (b) control unit (c) megahertz

(d) motherboard (e) None of these

**(14)** What is the difference between a CD-ROM (Read Only Memory) and a CD-RW?

(a) They are the same-just two different terms used by different manufacturers.

(b) A CD-ROM can be written to and a CD-RW cannot

(c) A CD-RW can be written to, but a CD-ROM can only be read from

(d) A CD-ROM holds more information than a CD-RW.

(e) None of these

**(15)** A disk’s content that is recorded at the time of manufacture and that cannot be changed or erased by the user is-

(a) memory-only (b) write-only (c) read-only

(d) run-only (e) None of these

**Answer :** (1) C (2) B (3) A (4) B (5) B (6) A (7) B (8) B (9) D (10) D (11) D (12) D (13) B (14) C (15) C

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