04
Check which of the following numbers are divisible by 9?
a)6789 b)32321 c)85784 d)7465938
05
Which digit should be put in blank so that the number is divisible by 3?
Q6
a) 7834_1 b)_451913
Find the common factors of :
a) 56 and 150 b) 12, 18 and 24
Q7
Arrange the prime factors of 3350 in ascending orders.
Q8
Find the L.C.M of the following:
a) 42,78,104,112
09
Find the H.C.F of the following?
70, 105, 175
Answers
Answered by
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Answer:
Step-by-step explanation:
Q4.
a) 6+7+8+9=30,
b) 3+2+3+2+1=11
c) 8+5+7+8+4=32
d) 7+4+6+5+9+3+8+0+5=47
Sum of digits of ny no not divisible by 9 so no number is divisible by 9
Q5
a) 1,4, or7
b) 1,4, or7
Q6
a)56=2*2*2*7
150=2*3*5*5
so common facotr =2
b) 12,18,24
factors of nos are
12=2*2*3
18=2*3*3
24=2*2*2*3
so common factor=2*3=6
Q7
3350=2 x 5 x 5 x 67
Q8
42=2*3*7
78*=2*3*13
104=2*2*2*13
112==2*2*2*2*7
So LCM=2*2*2*2*3*7*13=4368
Q9
70=2*5*7
105=3*5*7
175=5*5*7
HCF=5*7=35
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