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प्रश्न
If 25 : 35 : : 45 : x, then the value of x is
विकल्प
63
72
54
none of these
उत्तर
63
25 : 35 :: 45 : x
`25/35=45/x`
⇒ x = `(35 × 45)/25=1575/25` = 63
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