There are two lights one is green another one is red. green blinks 2 times per a minute, red blinks 3 times per 2 minutes. If two lights are start at same time how many time they blink together in 1 hours.
- 7 Answers
- 7730 Views
- Zoho, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / harsha
30
first light flash twice in a minute...4 times in 2 minutes..
starts at 0 and flashes at 30 60 90 120 ..seconds
second light thrice in 2 minutes..
starts at 0 and flashes at 40 80 120..seconds
2 lights flash coincides one time in 2 minutes (at 120th second)
therefore ..for 60 minutes ,2 lights flash coincides 30 times..
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / jegathish
Green light blink every 30 sec(2 times per minute), and red light blink every 40 sec(3 times per 2 minute)..
green blinks 30,60,90,120,...
red blinks 40,80,120,..
so every 2 minutes lights blink together ,which means 1 hour=60 min......
so 60/2 = 30 times both lights are blink together.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / ishwarya
For 2 minutes green light blinks 4 times (2 times in 1 minute means 4 times in 2 minutes)
For the same two minutes starting at the same time red light blinks 3 times.
So for the first two minutes both the light together blinks 7 times.
2 mins---->7 times (7*(2/2))
4 mins---->14 times (7*(4/2))
6 mins---->21 times (7*(6/2))
8 mins---->28 times (7*(8/2))
....
60 mins---->210 times (7*(60/2))
| Is This Answer Correct ? | 1 Yes | 3 No |
300
for a hour 60 min
for green 60x2=120
red =60x3=180
so 12+180=300
| Is This Answer Correct ? | 1 Yes | 4 No |
There is a carem board where 4 No of player can play at a time but 5 No of player have to play each to every. In this case how many minimum game will be play.?
What is the probability of getting a sum 9 from two throws of a dice?
A worker pay Rs20 a day ,he works 1,1/3,2/3,1/8,3/4 in a week.What is the total amount paid to the worker.
Challenge For you Friends!! 1 Ladke ne 1 Ladki ko Milny k liye ‘HOTEL’ me Bulaya, Ladki nahi aai, Ladka Ladki k Ghar gya, aur Table par Baith kar Machis ki 15 Tiliyon se ‘HOTEL’ Likha. Ladki Samjh gai, Ladki ne 1 Tili Uthai Aur Ladke ko Ans Mil gya. Batao Ladki ne kon c Teli Uthai Aur Ladke ko kya Jawab Mila?
.A clock gives 4 ticks consequetively. After days it has become defective & gives only 2 ticks. What is the probability that clock produces 3 ticks consequetively. 1 out of ?
A circle and a rectangle have the same perimeter. The sides of the rectangle are 18 cm and 26 cm. What will be the area of the circle? (a) 88 cm2 (b) 1250 cm2 (c) 154 cm2 (d) 128 cm2 (e) None of these
If m-4 is 7 more than n then m+9 is how much more than n+2
what should be the age of father if his children was just half of the age of father when he was 30
series: ??,55,66,48,61,74,60,75,90
CAN ANYBODY SEND ALL THE PREVIOUS SET OF QUESTION PAPERS WITH ANSWERS OF THE STATE BANK OF INDIA CLARICAL RECRUITMENT EXAMINATION.... THAT WOULD BE VERY HELPFUL.... REGARDS
2 Answers State Bank Of India SBI,
Find the least value of 3x + 4y if x2y3 = 6.
A grosser purchased 80kg of rice at Rs.13.50 per kg and mixed it with 120kg rice at Rs 16 per kg.At what rate per kg should he sell the mixture to gain 16% ?
English 
