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What chapters to grasp on LR since few days are left for cat?

please provide SSC MTS2019 papers

A beaker contains acid ajd water in the ratio of 1:x .when 300 ml of the mixture and 50 ml of water are mixed,the ratio of acid and water becomes 2:5 .what is the value if x?

20 balls are distributed among 5 children. In how many ways can this be done if the children get only an even number of balls with each one having atleast one ball ?
(1) 126
(2) 975
(3)1001
(4) None of these

89250_17850_7140_1428_?_144.24

which gas help ripening of fruit naturally ?..
Ethylene I right

A fruit vendor buys a dozen apples at rs 108. At what price should he sell a dozen so that he makes a profit of 16.67% after allowing 14.28% for decay

Find the value of 6+11+16+21+26+....+71

in an examination 38% fail in English and 61% pass in hindi and 23% fail in both .find the actual fail percentage, assuming a student passes only if he clears both these subjects.

Amount of income is kept on goods, 4% of 2780 is spent on 75% of stock and 5% on 80%, 5% is spent in stocks.
1. 1500
2. 1280
3. 1600
4. 3000
5. None of these