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1170 1001 880 799
750 ?

(a) 710
(b) 699
(c) 725
(d) 650
(e) 600
in Quantitative Aptitude
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Best answer

$1170-1001=169=13^{^{2}}$

$1001-880=121=11^{^{2}}$

$880-799=81=9^{^{2}}$

$799-750=49=7^{^{2}}$

$750-x=5^{^{2}}$

therefore x=725 Answer C

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