Question

A choose the correct alternativerint from the following which of the following is a natural number? b) - 7 0-25 09-7 d9-7 0 23​

Answer 1

Answer:

Using the digits 0, 1, 3, 7, 9

number of one digit natural numbers that can be formed = 4,

number of two digit natural numbers that can be formed = 20,

(∵0 can not come in 1st box)

number of three digit natural numbers that can be formed = 100

and number of four digit natural numbers less than 7000, that can be formed = 250

(∵ only 1 or 3 can come in 1st box)

∴ Total number of natural numbers formed

= 4 + 20 + 100 + 250 = 374

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Step-by-step explanation:

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