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Twenty One icon - also known as education, numbers, number, math, mathematical constant, mathematical symbol, character, 21, character design, and number 21. Created in a clean flat gradient style, perfect for web, apps, and UI projects. Available in SVG and PNG, with multiple style variants.
<svg
xmlns="http://www.w3.org/2000/svg"
width="512"
height="512"
viewBox="0 0 512 512"
>
<linearGradient id="a">
<stop offset="0" stop-color="#29c2ff" />
<stop offset="1" stop-color="#0690ba" />
</linearGradient>
<linearGradient
id="b"
x1="105.37"
x2="266.788"
y1="328.734"
y2="167.316"
gradientTransform="matrix(1 0 0 -1 0 514.75)"
gradientUnits="userSpaceOnUse"
href="#a"
/>
<linearGradient
id="c"
x1="248.055"
x2="400.722"
y1="321.553"
y2="168.876"
gradientTransform="matrix(1 0 0 -1 0 514.75)"
gradientUnits="userSpaceOnUse"
href="#a"
/>
<path
fill="url(#b)"
d="M225.9 162.4c18.2 5.8 30.5 18 30.5 41.8v25.2c0 10.5-1.5 19-4.5 25.8s-10.5 14-22.2 22.2l-38.5 26c-4 2.3-6 5-6 8.2v2.5h73.2c1.2 0 2 .5 2 1.5v37.5c0 1-.5 1.5-1.8 1.5H124.9c-4.5 0-6.8-2.2-6.8-7v-22.5c0-9.8 2.2-17.5 6.5-23.2s12.8-13 25.2-22.2l50.2-36.2c8-6 10-11.2 10-22.5v-5c0-14-7-18.2-32-18.2h-49.2c-2.2 0-3.5-1-3.5-3.2v-25c0-4.2 1.8-6 6-7.2 14.8-3.2 32.2-4.8 52.5-4.8 16.8-.2 29.1.8 42.1 4.8z"
/>
<path
fill="url(#c)"
d="M359.1 314.4h30.8c2.8 0 4 1.2 4 3.8V351c0 2.5-1.2 3.8-4 3.8h-106c-2.5 0-3.8-1.2-3.8-3.8l-.2-32.8c0-2.5 1.2-3.8 4-3.8h31.5V207.6c0-10.2-3.8-12.5-15.5-12.5h-17.5c-2.8 0-4.2-1.2-4.2-3.8v-25.8c0-3 1.5-4.8 4.2-5.2 9.4-2 18.9-3 28.5-3 15 0 24.8 1.5 34 6.8 9.8 5 14.2 15.5 14.2 31.5z"
/>
</svg>
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