TESTfunda - CAT Question of the Day 03-Mar-13

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Testfunda
03-Mar-13
CAT Question of the Day
If the students of a class are arranged in a square formation, 5 members are left out of the arrangement. The teacher realizes that if he arranges the group in a formation with 7 more rows than columns, there will be no members left out of the arrangement. Find the maximum no of students the class can have?
OPTIONS
 
 1)286
 2)294
 3)324
 4)350
 5)216
Tip of the Day
While solving Modern Maths questions, It is convenient to shift to logarithmic expressions when working with higher powers of variables.
Last year's Question of the day (02-Mar-12)
Pure water is useful because it has a neutral pH due to its continued dissociation between hydroxide and hydronium ions. As a result, it can dissolve both positive metallic ions and negative non-metallic ions with equal ability. Furthermore, the fact that organic molecules can be either hydrophobic (repelled by water) or hydrophilic (soluble in water) creates the ability of organic compounds to orient themselves to form water-enclosing membranes. The fact that solid water (ice) is less dense than liquid water (within specific temperature ranges) means that ice floats, thereby preventing Earth's oceans from slowly freezing. Without this quality, the oceans could have frozen solid during the Snowball Earth episodes. Additionally, the hydrogen bonds between water molecules give it an ability to store energy with evaporation, which upon condensation is released. 

Which of the following could be the title for this passage?
OPTIONS
 
 1)Water and Life
 2)The ability of water to maintain balance of life
 3)The differences between hydrophobic and hydrophilic ions
 4)Solid water versus liquid water
 5)The many properties of water
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