183. The octal number 1170, 76051 when converted to decimal number will be
A.632.97
B.622.67
C.632.37
D.632.17

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184. The hexadecimal number AB6 is equal to decimal number
A.2274
B.2427
C.2742
D.2247

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185. Indigital computer the numbere 127 is stored as
A.1111111
B.10001
C.11000111
D.100100111

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186. Which logic gate is similar to the function of two series switches?
A. AND
B. OR
C. NAND
D. All of the above

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187. Which logic function has the output low only when both inputs are high?
A. OR
B. NOR
C. AND
D. NAND

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188. Which of the following relation is invalid according to Boolean algebra?
A.0 +X=X
B.1+X=1
C.X+X=X
D.X+X= 0

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189. According to Boolean algebra which of the follciwing relation is not valid?
A.X + = 1
B. 0 . X = 0
C. 1 . X = 1
D. X . X = 1

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