Can you instantly find the greatest and the smallest numbers in the row? 1834, 75284, 111, 2333, 450.

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(a)

What is 10- 1=?

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Whatis 100- 1=?

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Using the digits 2, 3, 9, 6, write the smallest four-digit number.

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(a)

What is the place value of 6 in 65489203?

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(a)

A merchant had Rs.24642. He placed an order for purchasing 20 radio sets at Rs. 1150. How much money will remain with him after purchase?

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(a)

Round off these numbers to the nearest thousands 2936

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Estimate the following using general rule 12,904 + 2888

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Estimate the following using general rule 28,292 - 21,496

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Estimate (673 - 528)

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(a)

Write the following in Hindu-Arabic numeral XXIV

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(a)

Write the following in Hindu-Arabic numeral XLVI

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(a)

Write the smallest 8-digit number having four different digits.

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Make as many 4-digit numbers as you can from the given four digits 7, 8, 3, 5.

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(a)

XXXX, VX, IC, XVV are not written. Can you tell why?

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(a)