2022_IAS_Qn A66. Let p be a two-digit number and q be the number consisting of same digits

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 Let p be a two-digit number and q be the number consisting of same digits written in reverse order. If p × q=2340, then what is the difference between p and q?
 
(a)    45
(b)    27
(c)     18
(d)    9
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Sir, m very afraid of maths
Pls, tell me how to identify the method of doing such questions. Bcoz for me it takes a lot of time to know how to approach such a questions

NavneetKaur-wnhl
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Sir one doubt? How you decide that conclusion that 45 is a factor as 15 is also a two digit factor which ending with clarify 🥺🥺🥺🥺

TheGublubhai
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1215 also divided by 5 ...so you divide it by 3 why ...how we can understand in exam to divide 3 or 5

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