Ranjan Rasmi Rout
from
Delhi Public School, Nalco Nagar, Angul , Angul
Subject :IMO Class : Class 6
State 'T' for true and 'F' for false and select the correct option.
(i) A prime number cannot have 0, 2, 4, 5, 6 and 8 at its ones place except 2.
(ii) Two numbers are called co-primes, if their L.C.M. is 1.
(iii) If X is a factor of Y and Y is a factor of Z, then X is also a factor of Z.
(iv) 4 is the smallest composite number.
A
B
C
D
I think correct answer is B. Because all the numbers having 2 at ones are not prime number
Ans 1:
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Dheer Pandey
from
Sentia The Global School, Hyderabad
Class : Class 10
Its not possible to have a number divisible by 2 in case of the digit at ones place being 5. So, (i) is false.(ii)F(iii)T(iv)TSo, B should be the answer. But the answer says C. Have no ideas why.
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BIREN KARMAKAR
from
Kendriya Vidyalaya AFS ARJANGARH, NEW DELHI
Class : Class 6
5 itself is a prime number, so option i) cannot be true.The correct answer should be B.
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krishiv nijhawan
from
maharaja sawai man singh vidyalaya, jaipur
Class : Class 6
but 5 is primeso 1 is false
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Daksh
from
Greenwood High, Bengaluru
Class : Class 7
B is correct as 5 is a prime number in units place. Pls correct this Admin.
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Anuja Grover
from
Delhi public school, New Delhi
Class : Class 4
5 is prime so ( i ) is false but they have given that (i)is true why do they confuse us so much
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Aayush Tripathy
from
SAI International School, Bhubaneswar
Class : Class 9
5 is a prime number which makes the correct option as B
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Masroor Ahmed Khan
from
DAV PUBLIC SCHOOL UNIT 8, BHUBANESWAR
Class : Class 6
ans. is wrong ,ans. is B
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Vanshika Rallapalli
from
FIITJEE World School, Hyderabad
Class : Class 6
but 5 is prime so ( i ) is false but they have given that (i)is true
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Ananya Tiwari
from
Sapphire International School, Ghaziabad
Class : Class 7
To be more specific, the statement should have been: -A prime number cannot have 0,2,4,5,6 and 8 at its ones place except for 2 and 5.