CBSEi Class 10 Sequences (AP and GP) CORE
CBSEi Class 10 Sequences (AP and GP) CORE
CBSEi Class 10 Sequences (AP and GP) CORE
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Student’s Worksheet 7<br />
Content Worksheet (CW2) – Recognising an A.P.<br />
Name of Student _____________________ Date___________<br />
1. Check which of the following sequences is an A.P. Justify your answer.<br />
a) 12, 14, 16, 18, ......<br />
Here, a1 =.............<br />
a2 =............<br />
a2 - a1 =.............<br />
a3 =............<br />
a3 – a2 =.............<br />
Is a2 - a1 = a3 – a2 ?<br />
What do you conclude?<br />
_________________________________<br />
b) -4, -7, -<strong>10</strong>, -13, ......<br />
Here, a1 =.............<br />
a2 =............<br />
a2 - a1 =.............<br />
a3 =............<br />
a3 – a2 =.............<br />
Is a2 - a1 = a3 – a2 ?<br />
What do you conclude?<br />
__________________________________<br />
80<br />
Here, a1 =.............<br />
a2 - a1 =.............<br />
d =............<br />
an = a1 + (n-1)d<br />
=<br />
=<br />
an-1 =<br />
=<br />
Is an – an-1 free from n ?<br />
What do you conclude?<br />
_________________________________<br />
Here, a1 =.............<br />
a2 - a1 =.............<br />
d =............<br />
an = a1 + (n-1)d<br />
=<br />
=<br />
an-1 =<br />
=<br />
Is an – an-1 free from n ?<br />
What do you conclude?<br />
_________________________________
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