If N is a seven digit natural number such that when it is added to the sum of its own digits the result is the least eight digit number. What is the remainder when N is divided by 9?
1) 0
2) 5
3) 9
4) 1
5) 3
answer in red 
If N is a seven digit natural number such that when it is added to the sum of its own digits the result is the least eight digit number. What is the remainder when N is divided by 9?
OPTIONS
1) 0
2) 5
3) 9
4) 1
5) 3
Least 8 digit no.- 10000000
By hit n trial, 7 digit no is 9999950 so dat if we add 50 to it , it 'll b least 8 digit no...
Ans->(2)
Puys .. plz clarify..Only integers can be even or odd??
For eg: 6^1/2 , 8^1/2( wat bout des no???)
( ^- sqr root)
thanks
Hi, Per my understanding fractions/decimals are also either even or odd because an integer can be represented as a fraction....
4/2 ~ 2 even
8^1/2 ~ 2.82 , so even
puys, any other ideas?
Even and odd is applicable to integers only ...
We cannot have even or odd fractions ...
Even number is an integer that is perfectly divisible by 2 and odd number is an integer that is not perfectly divisible by 2
least 8 digit no.- 10000000
by hit n trial, 7 digit no is 9999950 so dat if we add 50 to it , it 'll b least 8 digit no...
Ans->(2)
imo : 4) 1
missiong Saysimo : 4) 1
Tell us your approach please...
If N is a seven digit natural number such that when it is added to the sum of its own digits the result is the least eight digit number. What is the remainder when N is divided by 9?
1) 0
2) 5
3) 9
4) 1
5) 3
answer in red :biggrin:
You are correct nee.You can solve such qs by trying with simple nos like 3-digit and 4-digit instead of trying with 8 or 9-digit
For 3-digit we want to have 100.So the number will be 86. 86%9 = 5
For 4-digit we want to have 1000.So the number will be 977. 977%9 = 5
-Deepak.
If n and k are integers whose product is 400, which of the following statements must be true?
(A) n + k > 0
(B) nk
(C) Either n or k is a multiple of 10.
(D) If n is even, then k is odd.
(E) If n is odd, then k is even.
If n and k are integers whose product is 400, which of the following statements must be true?
(A) n + k > 0
(B) nk
(C) Either n or k is a multiple of 10.
(D) If n is even, then k is odd.
(E) If n is odd, then k is even.
IMO: E
obviously n and k can both be -ve, so A is out
400 is 20 * 20, so B is out
400 is 5^2 * 2^4 so C is out
Between D and E:
400 is even.
even * even = even
even * odd = even
So if n is even, k can be even or odd, D is out
But if n is odd, k has to be even. Answer: E
if n and k are integers whose product is 400, which of the following statements must be true?
(a) n + k > 0
n & k can be -ve integers
(b) nk
n can be = k = 20
(c) either n or k is a multiple of 10.
25 * 16 = 400
(d) if n is even, then k is odd.
not necessary, 50*8
(e) if n is odd, then k is even.
as the product is even, if one of the integers is odd, the other has to be even
imo e, oa?
ndhadha Saysimo e, oa?
OA is E indeed!
The employees of Smith Enterprises received wage increases ranging from 30 cents to 87.5 cents per hour. What was the minimum wage increase for a 40-hour week?
(A) $12.00
(B) $23.00
(C) $34.80
(D) $35.00
(E) $35.20
The employees of Smith Enterprises received wage increases ranging from 30 cents to 87.5 cents per hour. What was the minimum wage increase for a 40-hour week?
(A) $12.00
(B) $23.00
(C) $34.80
(D) $35.00
(E) $35.20
I will go with option a)$12
The employees of Smith Enterprises received wage increases ranging from 30 cents to 87.5 cents per hour. What was the minimum wage increase for a 40-hour week?
(A) $12.00
(B) $23.00
(C) $34.80
(D) $35.00
(E) $35.20
Well, IMO - A, however it seems too simple to be true... :-P
ndhadha SaysWell, IMO - A, however it seems too simple to be true... :-P
Yeah!! Even I marked A. But OA is D! Any idea on this?
Padmalathas SaysYeah!! Even I marked A. But OA is D! Any idea on this?
If the q is max wage increase then you get 87.5 * 40 = 3500.So I guess there is some flaw in the q
deepakraam SaysIf the q is max wage increase then you get 87.5 * 40 = 3500.So I guess there is some flaw in the q
Yeah! May be! Checked in other forums as well!
A boat traveled upstream a distance of 90 miles at an average speed of (V-3) miles per hour and then traveled the same distance downstream at an average speed of (v+3) miles per hour. If the trip upstream took half an hour longer than the trip downstream, how many hours did it take the boat to travel downstream?
a. 2.5
b. 2.4
c. 2.3
d. 2.2
e. 2.1
Answer this one for me guys.
A bag contains 3 red, 4 black and 2 white balls. What is the probability of drawing a red and a white ball in two successive draws, each ball being put back after it is drawn?
(A) 2/27
(B) 1/9
(C) 1/3
(D) 4/27
(E) 2/9
My answer was (A) but thats not correct. I need reasoning for that too.
dont loose heart on seeing a streams question.. this is simple maths.. ;)
Speed = (Distance/Time)
thus, Time = (Distance/Speed)
T1(upstream) = 90/V-3
T2(downstream) = 90/V+3
T1 - T2 = 30mins = 30/60 = 0.5
..solving it we get V^2 = 1089, and V = 33
thus,
V-3 = 30
&
V+3 = 36
Ques:
how many hours did it take the boat to travel downstream
T2(downstream) = 90/V+3 = 90/36 = 10/5 = 2.5
answer must be option A
lemme know the OA ;)
A boat traveled upstream a distance of 90 miles at an average speed of (V-3) miles per hour and then traveled the same distance downstream at an average speed of (v+3) miles per hour. If the trip upstream took half an hour longer than the trip downstream, how many hours did it take the boat to travel downstream?
a. 2.5
b. 2.4
c. 2.3
d. 2.2
e. 2.1
Answer this one for me guys.
A bag contains 3 red, 4 black and 2 white balls. What is the probability of drawing a red and a white ball in two successive draws, each ball being put back after it is drawn?
(A) 2/27
(B) 1/9
(C) 1/3
(D) 4/27
(E) 2/9
My answer was (A) but thats not correct. I need reasoning for that too.
you must have missed out on probab between R and W... both can be 1st or 2nd in choice of pick up.. so probab of that also needs to be considered..
the answer must be 4/27.. option D ..lemme know the OA...;)