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1155

Q: What is the 4 digit number in which the first digit is one-fifth of the last and the second and third digits are the last digit multiplied by 3?

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1155

It is not because the first number ends in 5 and any number ending in five multiplied by another number is composite. Also, the second number ends in two, and any number ending in two multiplied by another number is composite. So, in conclusion, the number is not prime.

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Two to the fifth power multiplied by three to the second power equals 288.

The first and last, and the second and third.

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1349

Count the number of digits after the decimal point in the first number being multiplied. Count the number of digits after the decimal point in the second number being multiplied. Add the two numbers. This is the number of digits after the decimal point in the answer. But make sure that any trailing 0s are included. To calulate 0.42 * 3.451: 41*3451 = 144942 Digits after point in first number = 2 Digits after point in second number = 3 2 + 3 = 5 So digits after point in answer = 5 So answer = 1.44942 But To calulate 0.42 * 3.45: 42*345 = 14490 <<< it is vital that the last 0 here is kept till the last stage. Digits after point in first number = 2 Digits after point in second number = 2 2 + 2 = 4 So digits after point in answer = 4 So answer = 1.4490 = 1.449

900

That number is to the second power, or squared.

Divide the first number into the second number for the answer.

first step;group the digits into two. second step ;think of a number that when you multiplied by itself,the answer is smaller than the first group of a digits; third step ; multipied your answer by 20', in short, this can be done by trial and error method

The second three digits in a phone number refer to an exchange. An exchange includes several thousand people or phones.

If you have a check, your account number is at the bottom. It's the second number in this set of three numbers. The first (about 9 digits) is the bank's identification number, the second is your account number (about 13 digits) and the third is the check number.

In a multiplication sum, the first number, the number to be multiplied by another number, is called the multiplier. The second number is called the multiplicand, and the answer is called the product.

Not necessarily. Consider 444. The digits are not different. The first and second digits are not multiples of 3 The first digit is not greater than the second digit. In spite of all that, 444 is a 3-digit number

If the second number is divisible by 6 then neither first nor second number is odd.

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