Formation Of Numbers From Digits
Formation Of Numbers From Digits
Any four digit number is formed by a combination of three digits.
For example 2138 is a three digit number formed by the combination of 2, 1, 3 and 8.
Some other number that can be formed by 2, 1, 3 and 8 are
2183, 2381, 2318, 2813, 2831, 1238, 1283, 1382, 1328, 1823, 1832, and many more.
All these numbers are different
2138 = 2 thousand 1 hundred 3 tens and 8 ones.
2183 = 2 thousand 1 hundred 8 tens and 3 ones
2381 = 2 thousand 3 hundred 8 tens and 1 ones
2318 = 2 thousand 3 hundred 1 tens and 8 ones
2813 = 2 thousand 8 hundred 1 tens and 3 ones
2831 = 2 thousand 8 hundred 3 tens and 1 ones
And many more combinations can be formed
Illustration 1: The number formed by the three digit 1, 2, 4 and 7 are ____________
A..1325
B. 4247
C. 4127
D. 7312
Answer: C
Solution:
From the options available only number 4127 can be formed by the combination of digits 1, 2, 4 and 7
Hence the correct option is C
Illustration 2: The numbers 5831 can be formed by _______________ digits.
A. 1, 2, 3, 5
B. 2, 4, 5, 6
C. 8, 8, 2, 5
D. 8, 1, 5, 3
Answer: D
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8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
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