1
GATE ECE 2015 Set 1
+1
-0.3
Operators $$\square$$,◊,$$\rightarrow$$ are defined by : a $$\square$$ b = $$\frac{a-b}{a+b}$$; a ◊ b = $$\frac{a+b}{a-b}$$; a $$\rightarrow$$ b = ab. Find the value of (66 $$\square$$ 6) $$\rightarrow$$ (66 ◊ 6).
A
-2
B
-1
C
1
D
2
2
GATE ECE 2013
+1
-0.3
In the summer of 2012, in New Delhi, the mean temperature of Monday to Wednesday was 41ºC and of Tuesday to Thursday was 43ºC. If the temperature on Thursday was 15% higher than that of Monday, then the temperature in ºC on Thursday was
A
40
B
43
C
46
D
49
3
GATE ECE 2012
+1
-0.3
If (1.001)1259 = 3.52 and (1.001)2062 = 7.85, then (1.001)3321 =
A
2.23
B
4.33
C
11.37
D
27.64
4
GATE ECE 2011
+1
-0.3
There are two candidates P and Q in an election. During the campaign, 40% of the voters promised to vote for P, and rest for Q. However, on the day of election 15% of the voters went back on their promise to vote for P and instead voted for Q. 25% of the voters went back on their promise to vote for Q and instead voted for P. Suppose, P lost by 2 votes, then what was the total number of voters?
A
100
B
10
C
90
D
95
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