1
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
Three friends, R, S and T shared toffee from a bowl. R took 1/3rd of the toffees, but returned four to the bowl. S took 1/4rd of what was left but returned three toffees to the bowl. T took half of the remainder but returned two back into the bowl. If the bowl had 17 toffees left, how many toffees-were originally there in the bowl?
A
38
B
31
C
48
D
41
2
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
Given that f(y) = |y| / y, and q is any non-zero real number, the value of | f(q) - f(-q) | is
A
$$0$$
B
-1
C
1
D
2
3
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
The horse has played a little known but very important role in the field of medicine. Horses were injected with toxins of diseases until their blood built up immunities. Then a serum was made from their blood. Serums to fight with diphtheria and tetanus were developed this way. It can be inferred from the passage that horses were
A
given immunity to diseases
B
generally quite immune to diseases
C
given medicines to fight toxins
D
given diphtheria and tetanus serums
4
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
The sum of n terms of the series 4 + 44 + 444 +.... is
A
$$\left(4/81\right)\;\left[10^{\mathrm n+1}\;-\;9\mathrm n\;-\;1\right]$$
B
$$\left(4/81\right)\;\left[10^{\mathrm n-1}\;-\;9\mathrm n\;-\;1\right]$$
C
$$\left(4/81\right)\;\left[10^{\mathrm n+1}\;-\;9\mathrm n\;-\;10\right]$$
D
$$\left(4/81\right)\;\left[10^\mathrm n\;-\;9\mathrm n\;-\;10\right]$$
GATE ECE Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12