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
184. The hexadecimal number AB6 is equal to decimal number
A.2274
B.2427
C.2742
D.2247
185. Indigital computer the numbere 127 is stored as
A.1111111
B.10001
C.11000111
D.100100111
186. Which logic gate is similar to the function of two series switches?
A. AND
B. OR
C. NAND
D. All of the above
187. Which logic function has the output low only when both inputs are high?
A. OR
B. NOR
C. AND
D. NAND
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
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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