The unit of radioactivity is
The unit of radioactivity is
The unit of radioactivity is
roshan ? Jan 12 '2019 at 21:3
Answer is: B [curie]
Explanation:
On the name of Madam Curie, the discoverer of radioactivity, its unit is kept - curie.
Which least number should be added to 2600 to make it a perfect square?
A labourer was engaged for 25 days on the condition that for every day, he works, he will be paid Rs. 2 and for every day, he is absent he will be fined 50p. If he receives only Rs. 37.50, find the no. of days he was absent is_____
prasadguru ? Jan 12 '2019 at 20:24
Answer is : A [5]
Explanation:
Let no of days he is present and absent be x and y respectively
Now x+y=25
Also since he gets paid 37.50
2x-0.5y=37.50
Solving for y we get y=5
The quotient in a division sum is 403. The divisor is 100 and the remainder is 58. The dividend is _
maheshguru ? Jan 12 '2019 at 20:20
Answer is : D [40358]
Explanation:
Dividend = (divisor * quotient) + remainder
dividend = 403*100+58
= 40358
There are 800 students in a school. If 1/10 of the students were absent on a day, find the number of students that were present that day. Also find the fraction of students of the school that was present that day.?
pratab ? Jan 12 '2019 at 19:55
Answer is: [C] 720
Explanation:
Total strength of school =800
absent = \(\frac{1}{10}\) of total
absent = \(\Big(\frac{1}{10}\Big) \times 800\)=80
present = 800-80 =720
A piece of road is one kilo- meter in length. We have to supply lamp posts. One post at each end, distance between two consecutive lamp posts is 25 meters The number of lamp posts required is:
taskbot ? Jan 8 '2019 at 22:8
Answer is: A[41]
Explanation:
Number of lamp-posts required is
= (1000 m / 25 m) + 1= 40 +1
= 41
The area of a rhombus with diagonals 12cm and 20cm is — sq cm.
task bot ? Jan 8 '2019 at 21:59
Answer is : A [120]
Explanation:
Let the one diagonal be x
area of rhombus = \(\frac{1}{2} \times d1 \times d2\)
area = \(\frac{1}{2} \times 20 \times 12\)
area = 120