The first digit can be any one of 1, 2, 3, 4 or 5. So you can choose the first digit in 5 ways.
Having done that, you have only four unused digits. So you can chosse the second digit in 4 ways.
Now then you have only three digits left so the third digit can be chaosen in 3 ways and so on.
Total number of ways: 5*4*3*2*1 = 120
24680
93876
256
Yes. Every whole number can be expressed as a ratio of whole numbers, and any fraction consisting of whole number numerators and denominators are by definition rational. So irrational numbers will be unending non-repeating decimals.
A number like pi that goes on forever without stopping or repeating Ex. 4.1345454545454545... a non repeating non terminating number goes like follows Ex. 4.529875621458698420...
1,023,456,789
9,876,543,210 9876543210
9875.
Decimal numbers that never end but that end up having a repeating pattern are called recurring decimals or repeating decimals.Examples would be 1/3 = 0.33333333...or 452/555 = 0.8144144144144144... (where 144 is the repeating pattern).Reaching that repeating pattern is known as becoming periodic. Only rational numbers will have a repeating pattern. (The repeating pattern may be 00000, as in 4/2 = 2.00000... .)If a decimal number continues forever without having a repeating pattern, then it is a irrational number. One example of a number that continues forever without repeating would be π (pi) which continues infinitely without repeating.Pi is also referred to as a transcendental number.
24680
All repeating decimals are rational numbers. Not all rational numbers are repeating decimals.
93,876
93876
256
12354.
Yes. Every whole number can be expressed as a ratio of whole numbers, and any fraction consisting of whole number numerators and denominators are by definition rational. So irrational numbers will be unending non-repeating decimals.
A number like pi that goes on forever without stopping or repeating Ex. 4.1345454545454545... a non repeating non terminating number goes like follows Ex. 4.529875621458698420...