Average of prime numbers ranging 1 to 50 is

M4maths Previous Puzzles

27 Aug 2013 average Average of prime numbers ranging 1 to 50 is: OPtion
1) 15.43
2) 16.54
3) 17.78
4) 17.93
5) 18.72
6) 19.13
7) 19.46
8) 21.33
9) 21.87
10) none of these; Correct Option: 9 Best Solution (44)

Dr.Dipin Singh 11 years AGO

Average = (2+3+5+7+11+13+17+19+23+29+31+37+41+43+47)/15 = 328/15= 21.8666.. or 21.87 ..option 9

Like? Yes (8) | No

ShAg 11 years AGO

There are 15 prime numbers from 1 to 50, they are:
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
Their sum = 328
Average = 328/15 = 21.87

Like? Yes (6) | No

soham kundu 11 years AGO

add of prime numbers are 328
then divide by 15 as there are 15 prime numbers..
result 21.866667

Like? Yes (5) | No

rahul jha 11 years AGO

answer--->21.87
prime no are those which z only divisble by 1 and itself...so between 1-50 ,
prime no. =2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
sum=328
avg=(sum of prime no/no. of prime no.)=328/15=21.87

Like? Yes (6) | No (3)

T Lokesh 11 years AGO

sum of prime numbers between 1 and 50 = 328
prime numbers = 2,3, 5 ,7 11,13,17,19,23,29,31,37,41,43,47
so average =328/15
=21.866
=21.87

Like? Yes (4) | No (1)

Alok Kumar 11 years AGO

as any prime accept 2,3 can be represented by
(6n-1) or (6n+1)
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
avg 21.87

Like? Yes (13) | No (11)

Madhu pericherla 11 years AGO

prime numbers from 1 to 50 is
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
average=(2+3+5+7+11....+47)/15=328/15=21.87
so ans is 21.87

Like? Yes (3) | No (2)

devendra kumar gond 11 years AGO

prime nos.are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47 and their avg is 21.866

Like? Yes (3) | No (2)

Chandni Maurya 11 years AGO

ans=(9).21.87
prime no range 1 to 50 are,
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47=>15 no.s
avg=addition of above prime no/15
=328/15=21.8666 = 21.87

Like? Yes (4) | No (3)

Mayuresh Srivastava 11 years AGO

(2+3+5+7+11+13+17+19+23+29+31+37+41+43+47)/15=21.87

Like? Yes (3) | No (2)

roushan 11 years AGO

(2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47)/15=21.87

Like? Yes (3) | No (2)

manasa epuru 11 years AGO

prime numbers between 1 and 50
2+3+5+7+11+13+17+19+23+29+31+37+41+43+47=328 divided by 15 = 21.87

Like? Yes (3) | No (2)

Mithlesh Prasad 11 years AGO

taking all prime no.s sum=328
then divide it by no. of prime no.s.
i.e,328/15=21.8667

Like? Yes (2) | No (1)

sudipta sadhukhan 11 years AGO

2 3 5 7 11 13 17 19 23 29
31 37 41 43 47

these are the 15 prime nos b/w 1-50.
so avg=328/15=21.87

Like? Yes (3) | No (2)

SATYAM SAURABH 11 years AGO

(2+3+5+7+11+13+17+19+23+29+31+37+41+43+47)/15=21.87
option is 9
note:- 1 is not a prime number

Like? Yes (2) | No (1)

rajakumar 11 years AGO

There are 15 prime numbers between 1 and 50.
They are: 2 3 5 7 11 13 17 19 23 29
31 37 41 43 47
sum=2+ 3 +5 +7+ 11 +13+ 17+ 19+ 23+ 29+
31 +37+ 41+ 43+ 47=328
average of no's=(total sum/no of prime no b/w 1 to 50)=328/15=21.866666=21.87

Like? Yes (3) | No (2)

AISHWARYA 11 years AGO

there are 15 prime numbers between 1 to 50
2+3+5+7+11+13+17+19+23+29+31+37+41+43+47=328
avg =328/15=21.87

Like? Yes (2) | No (1)

aman kumar tiwari 11 years AGO

prime no are...2'+3+'+5+'+7='+11+'1+3'+17='1+9'+23+'29+'31+'37+'41+'43+'47=328/15=21.666666667

Like? Yes (1) | No

FAISAL RIZWAN 11 years AGO

sum of prime no between 1 to 50 is
2+3+5+7+11+13+17+19+23+29+31+37+41+43+47=328
total no. is 15 then 328/15=21.87

Like? Yes (7) | No (6)

kumar 11 years AGO

the total number of prime number's 1 to 50 is 15
sum of prime numbers 328
average = 328/15
=21.8666

Like? Yes (2) | No (1)

Debopam Barik 11 years AGO

prime numbers between 1 to 50 are :
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47

Like? Yes (2) | No (1)

Grishma Shah 11 years AGO

there are total of 15 prime no. between 1 to 50
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
total =328
average: 328/15=21.866666
avg.= 21.87 ans

Like? Yes (2) | No (1)

Bingumalla Abinay 11 years AGO

2+3+5+7+11+13+17+19+23+29+31+37+41+43+47=328

328/15=21.866

Like? Yes (2) | No (1)

sanjay singh 11 years AGO

the prime nos from 1 to 50 are 2,3,5,7,11,13,17,23,27,29,31,37,41,43,47,(15 nos.)
their total=328
average=328/15=21.866=21.87

Like? Yes (2) | No (1)

LOGAN WOLVERINE 11 years AGO

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47
sum is 328
average is 328/15
is 21.87

Like? Yes (1) | No

Aniruddha Bhattacharjee 11 years AGO

prime numbers between 1 to 50 are 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
There is total 15 number and sum is 328
Average=328/15
=21.87

Like? Yes (2) | No (2)

Rats 11 years AGO

Prime numbers between 1 and 50 are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47
So average (2+3+5+...+47)/15=21.87.....Ans

Like? Yes (2) | No (2)

Devendra Marghade 11 years AGO

Prime numbers from 1 to 50 are total 15 as
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
Sum=328, Average=328/15=21.87

Like? Yes (2) | No (2)

sridevi 11 years AGO

there are 15 prime numbers between 1 to 50
so 328/15=21.87

Like? Yes (2) | No (2)

KUNAL GAURAV 11 years AGO

We have total 15 primes between 1 and 50 they are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

Adding them all we get 328.
And then dividing the sum by 15 we get 21.87
So the correct answer is 21.87

Like? Yes (2) | No (2)

IFFAT IRAM 11 years AGO

prime no.s=> 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47
avg=21.87

Like? Yes (2) | No (2)

Avinash Kumar 11 years AGO