TANCET MCA Number Series Previous Year Questions (PYQs)
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The greatest number of four digits which is divisible by 15, 25, 40 and 75 is
1
2
3
4
Solution
LCM $= 600$
Largest multiple below 9999 $= 9600$
Largest multiple below 9999 $= 9600$
Find the odd one in this sequence - 5, 10, 15, 26, 37
1
2
3
4
Solution
Pattern +5,+5,+11 ⇒ 26 wrong
Find the missing numbers
1
2
3
4
Solution
Observe column-wise pattern:
1st column: 15 + 13 = 28 and 20 + 8 = 28
2nd column: 6 + 3 = 9 and 7 + 2 = 9
So in the 3rd column, the same pattern must follow:
5 + 9 = 14
Therefore, 13 + ? = 14
? = 1
Hence, the missing number is 1.
Final Answer: (a) 1
1st column: 15 + 13 = 28 and 20 + 8 = 28
2nd column: 6 + 3 = 9 and 7 + 2 = 9
So in the 3rd column, the same pattern must follow:
5 + 9 = 14
Therefore, 13 + ? = 14
? = 1
Hence, the missing number is 1.
Final Answer: (a) 1
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