If a and b are positive integers, is a + 4b odd?
1) b is even.
2) a is odd.
a) if statement (1) ALONE is sufficient, but statement (2)
alone is not sufficient to answer the question.
b) if statement (2) ALONE is sufficient, but statement (1)
alone is not sufficient to answer the question.
c) if BOTH statements (1) and (2) TOGETHER are sufficient to
answer the question asked, but NEITHER statement ALONE is
sufficient.
d) if EACH statement ALONE is sufficient to answer the
question asked.
e) if statements (1) and (2) TOGETHER are NOT sufficient to
answer the question asked, and additional data specific to
the problem are needed.
Answer Posted / gaurav.s. a.i.e.t
(b) statement (2) is sufficient to answer
it has nothing to do with 4b because ...product of even and
ood is always even...
and sum of even and odd is always odd.
| Is This Answer Correct ? | 10 Yes | 0 No |
Post New Answer View All Answers
A can do a piece of work in 30 days, which B can do in 20 days. Both started the work but A left 5 days before the completion of the work. It took how many days to complete the work?
A triangle has sides of lengths 10, 24 and k. k is a positive integer. The number of values of k for which this triangle has three acute angles is
If 10x coins are added to the no. of original coins he has (5y + 1) times more coins. Find out how many coins he had originally in terms of x and y
In a journey of 15 miles two third distance was travelled with 40 mph and remaining with 60 mph.How much time the journey takes...
A finishes the work in 10 days & B in 8 days individually. If A works for only 6 days then how many days should B work to complete A's work?
please let me know the minimum qualifying marks in screening test of group1 2010 to be eligible for group1 main exam.
There are 9 balls of these one is defective. Find the minimum no. of chances of finding the defective one.
A soldier looses his way in a thick jungle at random walks from his camp but mathematically in an interesting fashion. First he walks one mile east then half mile to north. Then 1/4 mile to west, then 1/8 mile to south and so on making a loop. Finally hoe far he is from his camp and in which direction.
There are Brown and Black cows. In five days four black cows and 3 brown cows give as mush as milk that four brown cows and 5 black cows give in four days. If the black cow gives 10 litres of milk per day, how many liters of milk the Brown cow will give in one day? (Numbers are not certain)
Find the next number in the series 0,3,8,15,,24,48,63--
one answer is 200/3 % it is perfectly correct wecannot recollec the prob. so place it blindly.
What is the selling price of a car? If the cost of the car is Rs.60 and a profit of 10% over selling price is earned.
Sum of a series of n numbers is n+8. Find second (or second last) no.
There is a work which can be completed by A with 12 days and B by 18 days. A and B works together for 3 days and B left. After that how many days for A to complete the work?
Each row of letters or numbers has a rule connecting them. Write the next number or letterin the brackets. 1 , 4 , 9 , 16 , 25 , 36 , (_ _ _)