Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If sinθ x cosθ = 1⁄2 . The value of sinθ ­- cosθ is where 0°< θ< 90°

What is the x – intercept of the linear equation 18x + 25y – 900 = 0?

The number of solutions of the pair of linear equations x + 2y - 8 = 0 and 2x + 4y = 16 is

Select the odd letters from the given alternatives.

Complete the number series by choosing the missing terms from the options. 32, 64, 256, 1536, ? ,122880,1474560

In the given series, how many 8s are there that are not divisible by the number to its left but completely divisible by the number to its right.

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If R019 is divisible by 11, find the value of the smallest natural number R?