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To find a so that 4645a52 is divisible by 72, check both conditions: 1. Divisibility by 8: Last three digits a52 must be divisible by 8. =052 (divisible by 8) =152 (not divisible by 8) =252 (not divisible by 8) =352 (divisible by 8) 2. Divisibility by 9: The sum of digits 26 + a must be divisible by 9. =26+0=26 (not divisible by 9) =26+1=27 (divisible by 9) =26+2=28 (not divisible by 9) =26+3=29 (not divisible by 9) so,a =1.
Which gas is commonly used in electric bulbs to prevent oxidation?
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
Which of the following is not a natural polymer?
Which gas is evolved during the reaction of an acid with a metal?
To prevent heart problems, blood of a normal healthy person should have
What is heavy water?
White phosphorus is stored in which of the following substances?
Sphagnum is an important bryophyte. Consider the following statements about it:
Which type of wave does not require a medium for propagation?
Bleaching Powder is a compound of _______?
